Wednesday 29 May 2019

New approach to tackling invasive non-native species

The Wales Resilient Ecological Network (WaREN) is devising a new collaborative framework that will help public and private bodies and community groups to tackle the significant impacts of invasive non-native species (INNS). The programme is funded by the Welsh Government’s new Enabling Natural Resources and will focus on 16 INNS.
The European Union has a list of 49 'species of Union concern', with 25 of them found across the UK. The 16 species found in Wales – alongside other, common INNS – have a negative impact on the environment.

Japanese Knotweed is estimated to cost some £166 million in damage every year (HOerwin56 / Pixabay).
Japanese Knotweed is notorious for its ability to grow through cracks in hard surfaces, causing damage to buildings, roads and other works. The cost of this species to the British economy is estimated to be in the region of £166 million a year. Other dangerous or problematic invasive plants include Giant Hogweed and New Zealand Pigmyweed.
Lesley Griffiths, the Welsh Minister for Environment, Energy and Rural Affairs said: "The Wales Resilient Ecological Network (WaREN) project will help foster the collaborative approach that we know is needed to tackle invasive non-native species (INNS).
"The Welsh Government has contributed towards a number of INNS initiatives including North Wales Wildlife Trust's Our River Wellbeing Project, in which local volunteers are clearing invasive species from over 120 km annually of the River Dee catchment. They have protected species and habitats, improved water quality and restored access to green spaces. The WaREN project will help us to replicate that kind of success across the whole of Wales."
Nigel Ajax-Lewis MBE, Head of Biodiversity & Policy for Wildlife Trust of South and West Wales, added: "With INNS being amongst the top three drivers for Welsh wildlife decline along with climate change and habitat fragmentation, it is hugely important that we all work together to tackle the problem in the most efficient and cost effective way."

Study finds that UK moths suffer from unfair reputation

A study has revealed that around three quarters of the UK population have a negative opinion of moths, with many people believing the majority eat clothes and are pests.
Moths have long suffered an unfair reputation as the devourers of clothes despite the fact that only two out of more than 2,500 UK species are known to regularly feed on some fabrics. And rather than being pests, the vast majority of moths play important roles in the food chain and as pollinators. The facts are a stark contrast to the results from the YouGov poll conducted for wildlife charity Butterfly Conservation, which revealed that 64 per cent of people associated moths with eating clothes and one in three with being pests.

Moths get an unfair reputation among the British public despite the country being home to spectacular species such as Emperor Moth (Bob Eade).
Research found that 17 per cent of people thought moths were ugly and 12 per cent believed they were 'scary'. However some held more positive views, with one in five people believing moths were important and almost a third that they were interesting.
In a bid to make the UK enthusiastic about moths, Butterfly Conservation is launching Moths Matter a campaign aimed at overturning their unfair reputation.
Moths Matter is set to reveal how moths are a key food source for many other species, how they are fascinating and beautiful and how they play an important role as pollinators of wildflowers and garden plants.
The UK boasts a great range of charismatic and beautiful moths. Death's-head Hawk-moth can squeak like a mouse, Mother Shipton has a witch's face on its wings and the caterpillar of the Puss Moth can shoot acid out of its chest.

Puss Moth caterpillars can shoot acid out of their chests (John Bebbington).
Leading moth scientist Dr Phil Sterling explained: "We are not that surprised by the findings. People may think of a few times a large moth has startled them and then write them off as annoying or unnecessary; that is wholly unfair.
"Think of the Hummingbird Hawk-moth you might see hovering around lavender in summer. It is a thing of beauty and of wonder as it feeds so precisely in each flower.
"Each of the 2,500 species tells a different story about the natural world of moths around us. Most of them get on with their lives at night and we don't see them, but they are important to us, they pollinate many plants and they tell us about how the world is changing around us."
Scientists have recently discovered that moths may play a much broader role as plant pollinators than previously suspected. Moths are essential pollinators for some plants, including several of the UK's orchids, and they may act as pollinators for a much wider range of plants that had been realised, possibly even some crops. Some moths are much more mobile than bees and can dispense pollen over larger distances.

Moths should be cherished, not alienated and disliked (Mark Bicknell).
Moths and their caterpillars are important food for many other species, including amphibians, small mammals, bats and many bird species. Despite the reputation as the destroyers of clothes there are only two common species, Case-bearing Clothes Moth and Common Clothes Moth, that eat fibres of animal origin such as wool, fur and feathers.
The UK's moths are in trouble, iwht two-thirds of common and widespread species having declined over the past 40 years.Butterfly Conservation's Moths Matter campaign will focus on a different theme each month, from spotting springtime caterpillars, planting a garden to attract night-flying visitors, to hunting for hawk-moths in hedgerows.
Look out for the #MothsMatter hashtag on social media to get involved.

Snacks from the sky: Tiger Sharks eat migrant songbirds

Eating just about anything from dolphins and sea turtles to rubber tyres, Tiger Shark is widely referred to as the 'rubbish bin of the sea'.
A new study has confirmed that this varied diet is a feature of the species throughout its life. Before the apex predator grows to its mature size of 5 metres, young Tiger Sharks have been found to readily eat birds – and not the expected seabirds such as gulls or terns, but familiar landbirds including sparrows, doves and woodpeckers.
Marcus Drymon of Mississippi State University, the paper's lead author, and his team investigated juvenile Tiger Sharks' diets by capturing the 1-metre-long youngsters in the Gulf of Mexico, pumping their stomachs and releasing them again, before analysing a sample of the contents. Of the 105 sharks studied, 41 had bird remains in their stomachs.

Researchers collect Tiger Shark vomit for analysis.
As many of the prey items were partially digested, assigning them to species was challenging. To overcome this problem, they sent the remains to the Field Museum's Pritzker Laboratory for DNA analysis. The scientists took tiny pieces of the bird remains and used chemicals to break them down into their basic molecular components. From there, they were able to examine the DNA sequences present in the bird tissues and compared them to databases of bird DNA to see what species they were from. This revealed something of a surprise.
"None of them were gulls, pelicans, cormorants or any kind of marine bird," explained Drymon. "They were all terrestrial birds – the kinds that might live in your backyard."
Although it's not unprecedented to learn that Tiger Sharks eat birds – in Hawaii, for example, adult sharks are known to eat newly fledged albatross chicks which are still struggling to fly – this is the first time that evidence has come to light to show that they eat songbirds that spent almost all their lives on land.
But how did the birds get there in the first place? The answer is clear: migrant songbirds cross the Gulf of Mexico each spring and autumn to and from their breeding grounds in North America. Comparing the dates on which the songbird victims were found in the sharks to eBird data, the researchers noticed a striking correlation. "In every instance, the timing of the Tiger Shark eating the bird coincided with the peak migration for that species of bird off our coast," explained Drymon.

Typically seen on the grasslands and prairies of North America, it was a surprise for the researchers to find the remains of Eastern Meadowlark inside Tiger Sharks' stomachs in the Gulf of Mexico (Artur Stankiewicz).
Kevin Feldheim, a researcher at Chicago's Field Museum and a co-author of the study who led the DNA analysis, added: "The Tiger Sharks scavenge on songbirds that have trouble flying over the ocean. During migration, they're already worn out, and then they often get tired or fall into the ocean during a storm."
No fewer than 11 different landbird species were found in the stomach contents, including 'classic' long-distance migrants such as Barn Swallow, Eastern Kingbird and Common Yellowthroat, but also more surprising victims such as Marsh Wren, Eastern Meadowlark and Yellow-bellied Sapsucker.
Feldheim concluded: "Tiger sharks will see an easy meal and snatch it up, but I was surprised to learn that the sharks were eating songbirds – I assumed that they'd be seabirds.
"It was one of the coolest projects I've been associated with using DNA to tell a story."

Help to save Spotted Flycatcher

In order to understand why Spotted Flycatcher has declined at such an alarming rate, the BTO has launched an appeal to raise funds for tracking devices, so that it can be better understood where the species goes during migration and the winter. 
Spotted Flycatcher has undergone a wretched modern-day decline, with Breeding Bird Survey data showing a breeding population drop of 39 per cent between 1995 and 2016. This is part of a staggering longer-term decline of 87 per cent since 1970. The results of initial research indicate that more Spotted Flycatchers are dying during the first year of their lives and that this increased mortality is likely to be behind the population decline.

Spotted Flycatcher has declined by 87 per cent during the past five decades (Clive Daelman).
Funds raised through this Spotted Flycatcher appeal will enable BTO scientists to use a combination of the latest tracking devices and the support of local volunteers to follow individual birds as they migrate away from their breeding sites. As a result, how certain events occurring at different stages of the birds' annual cycle are having an impact on their population can be better understood.
To make a donation, please click here. As well as contributing to the appeal, you can make a difference by logging every Spotted Flycatcher you see on BirdTrack. While having declined drastically, this species is probably under-recorded in some areas. So, when the birding season slows down during June and July, why not try and discover a pair or two local to you?

Another Scottish Hen Harrier goes missing

Barely more than a fortnight since it was announced that a Scottish-born Hen Harrier named Skylar had gone missing in suspicious circumstances, yet another satellite-tagged bird has suddenly vanished.
RSPB Scotland is appealing for information following the abrupt disappearance of Marci, a female Hen Harrier that was satellite tagged as a chick in 2018 as part of the RSPB's Hen Harrier LIFE project.

Marci was tagged as a chick in summer 2018 (RSPB).
Marci, who fledged from a nest on National Trust for Scotland's Mar Lodge estate, went missing in an area notorious for bird of prey persecution. Her tag stopped transmitting on 22 April 2019. In August 2018, another young satellite-tagged harrier named Margot vanished on a grouse moor just a few miles from Marci's last recorded position.
Like Margot, Marci's tag was functioning normally until its sudden 'failure'. Marci had been exploring a wide area of North-East Scotland, with her last recorded position being in an area managed intensively for driven grouse shooting near Strathdon, west Aberdeenshire, in the Cairngorms National Park. Marci had been in this area for the previous three weeks with no indication of any technical issues with the tag. Subsequent searches by Police Scotland and RSPB Scotland revealed no trace of the bird or her tag.
The most recent UK Hen Harrier population survey revealed a worrying decline of 13 percent between 2010 and 2016, with an estimated 545 pairs across the country. While Scotland is the UK stronghold for the population with 460 of these, numbers there were down by 9 per cent since 2010 and 29 per cent since 2004.
Dr Cathleen Thomas, RSPB's Hen Harrier LIFE Project Manager, said: "These sudden disappearances of our satellite-tagged Hen Harriers are depressingly frequent; Marci didn't even get to make it through her first year before vanishing. The satellite tags are highly reliable so a sudden stop in transmitting gives us immediate cause for concern. If Marci had died of natural causes the tag should have continued to transmit, allowing our team to find her.
"A recent published study indicates that 72 per cent of Hen Harriers are being illegally killed on Britain's grouse moors, while another study found 31 per cent of tagged Golden Eagles in Scotland were illegally killed. Something has to change in the way our countryside is looked after, to help protect our iconic birds of prey in Scotland."
Ian Thomson, RSPB Scotland's Head of Investigations, added: "This is the latest in a string of similar incidents in western Aberdeenshire, and is further strong evidence of the systematic targeting of protected birds of prey on Scotland's driven grouse moors.
"In just the last few years, the illegal killing of a Common Buzzard, three Northern Goshawks and a Hen Harrier have been witnessed within a few miles of where Marci vanished. There have also been several confirmed poisonings; the filming of the illegal setting of traps; and the suspicious disappearances of several satellite-tagged eagles and other Hen Harriers. It is abundantly clear that current legislation is completely failing to protect our birds of prey, and robust regulation of the driven grouse shooting industry is both vital and long overdue."
If anyone can provide information about Marci or any illegal killing of birds of prey please contact Police Scotland on 101, or the RSPB's confidential raptor crime hotline on 0300 999 0101.

Two men convicted after destroying multiple bird nests

Two men have been fined after they were convicted of four offences under the Wildlife Act in Ireland. The pair cut a hedge out of season and a case against them was taken by the National Parks and Wildlife Service, under the remit of the Department of Culture, Heritage and the Gaeltacht. Both men were found guilty of the wilful destruction of birds' nests – namely Blackbird, Song Thrush, Woodpigeon and Eurasian Wren – as well as the destruction of vegetation growing in a hedge.

Cutting hedgerows during the breeding season can have an awful impact on wildlife (Derek Harper / geograph.org.uk).
The incident took place between 22 and 27 May 2017 at Clogrenan, Co Laois. Under the Wildlife Act 2000, hedge cutting and burning is banned every year between 1 March and 31 August. Carlow District Court saw evidence from the National Parks and Wildlife Service that 1.6 km of hedgerow vegetation had been destroyed as a result of their actions.
The two defendants said they did not know that there were bird nests in the hedgerow at the time they were cutting, nor that it was an offence to destroy vegetation growing in a hedge during the bird nesting season. They also said that it was a defence to remove hedgerow vegetation in the ordinary course of agriculture.
However, Judge Colin Daly said that the evidence presented to the court showed that the destruction of vegetation was significant and outside of the ordinary course of agriculture, because it was carried out on an extraordinary scale. He added that the damage also had significant implications for the protection of birds and the wider environment.
The judge convicted and fined the first defendant €750 on two counts and stated that, as the landowner, he had the greater culpability. He convicted the second defendant on two counts and fined him €500, before adding that ignorance of the law was no excuse to break it.

Everglades waterbirds enjoy best breeding season since 1940s

Florida state environmental officials announced this month that an extraordinary increase in waterbird nests in the South Florida marshes in 2018 culminated in numbers not seen for more than 60 years.
According to South Florida Water Management District's 2019 wading bird report, the Everglades National Park was host to some 138,834 nests of American White Ibis, Wood Stork and Roseate Spoonbill, among other species including Great Blue and Green Herons. This figure dramatically surpasses the modern-day high, which was 51,270 nests in 2009. Last year, one 'supercolony' near Interstate 75 in western Broward County held 59,120 nests alone, the most seen in a single area since the 1930s.

Roseate Spoonbill was one of the species to benefit from the unusual weather in South Florida last year (Wayne Geater).
An increase in fish populations, caused by a favourable pattern of rainfall, is thought to have played the most critical role in the birds' resurgence. "If you love the Everglades and you love birds, it is fantastic news," said Drew Bartlett, Executive Director of the South Florida Water Management District.
Julie Wraithmell, Executive Director of Aububon Florida, added: "By a freak of weather, we ended up with the right amount of water at the right places. The birds of the west Broward supercolony, however, benefited from a restoration decision to divert more water around their 1.6 km long island. Deeper water discouraged visits from predators and made it a more attractive spot for nesting and rearing young."
Though it's already clear that this year will be less successful – mainly because of weather-related reasons – the consensus is that 2018's incredible population increase shows how the Everglades will respond positively once further restoration work to improve the flow of water is complete. "It highlights the resiliency of the Everglades," said Mark Cook, bird biologist with the water management district. "If we get the water right – the right amount at the right time – we can recover these species quickly."

Continental waterbirds set to nest at Burton Mere Wetlands

An impressive five different species of large waterbird, some more commonly seen in the Mediterranean, are present at the RSPB's Burton Mere Wetlands, Cheshire, this spring and are showing positive signs of breeding.
Burton Mere Wetlands is well known for its breeding colonies of Grey Heron and Little Egret, but this year single pairs of Western Cattle Egret, Great Egret and Eurasian Spoonbill have also been observed, with the birds having been watched carrying nesting material into the colony in recent days.
Western Cattle Egret famously bred at the reserve in 2017 and reserve staff are thrilled to see a pair back this year after a blank year in 2018. However, this represents the first nesting attempt for both Great Egret and Eurasian Spoonbill on site.

One of the adult Eurasian Spoonbills shows off its breeding plumes at the Burton Mere Wetlands heron colony (Mark Woodhead).
Graham Jones, Site Manager at RSPB Burton Mere Wetlands said: "It is absolutely staggering to see five different heron species making their home here. Grey Herons nest here each year, but Little Egrets only colonised the UK in the late 1980s and have been breeding here since 2005. For them to now be joined by the much rarer [Western] Cattle Egrets, Great Egrets and [Eurasian] Spoonbills is even more astonishing. They're usually more at home breeding in the Mediterranean, so we've been dubbed the 'Costa del Dee' by some visitors, who are enjoying seeing the birds from a special watchpoint that we have created to allow for better views. If the birds all breed it will be extraordinary and cause for additional celebration in our anniversary year."
The RSPB is celebrating its 40th anniversary on the Dee Estuary this year, having secured its first reserve at Parkgate back in 1979, creating a protected area for tens of thousands of birds. Since then land holdings have expanded significantly to both sides of the border, with Burton Mere Wetlands being the most recent addition in 2011. The whole area is over 6,000 football pitches in size, making the Dee Estuary nature reserve the fifth largest RSPB site in the country.

Western Cattle Egret is set to breed on the reserve for the second time, having originally nested in 2017 (Ed Stubbs).
Graham added: "I grew up on the Wirral and started coming to Parkgate in the 1980s as a teenager to watch the birds thrive on the marsh. Back then it was inconceivable that Little Egrets would live here, let alone that we would be seeing the even more unusual species. We've also got at least 10 pairs of Mediterranean Gull nesting too, so it truly is like being on holiday, and testament to the hard work and dedication carried out here for the last four decades."
Over the past 40 years, the RSPB's work on the Dee Estuary has created valuable spaces for birds and other wildlife, and the organisation has undertaken extensive land management to support a variety of species to nest. Important conservation work by the charity further down the west coast at sites such as Ham Wall, Somerset, where Western Cattle and Great Egrets have bred in the past few years, has also paved the way for these species to move northward and make their home on the Dee.

Ten pairs of Mediterranean Gull are also nesting at Burton Mere Wetlands this summer (Jon Mercer).

Dominic Mitchell: cold case review

The recent addition of Falcated Duck to the British list will be welcomed by many, even if it has been a long time coming. So long, in fact, that some readers of this column may not even have been born when the bird in question turned up.
Back in 1987, as a relatively youthful birder keen to catch up with the rarities of the day, I was one of hundreds who converged on Pitsford Reservoir, Northamptonshire, to get a look at this rare Asian vagrant – at the time known in Europe from only a handful of records.
The bird had first appeared at Welney, Norfolk, in December 1986, before relocating to Pitsford in February 1987. Perhaps more tellingly, it reappeared the following winter, again first at Welney in late August, before moving to Northamptonshire in December. This would be unusual (though not unprecedented) behaviour for an escape, and the duck also kept company with Eurasian Wigeon, the classic 'carrier species'. Many birders believed it to be a genuine vagrant, but the possibility of a captive origin meant the record was not accepted.

It's taken more than 30 years for Falcated Duck to make it on to Category A of the British list (Francis C Franklin/commons.wikimedia.org).
Judging the provenance of such birds is a headache, and the Records Committee of the British Ornithologists' Union (BOURC) must be pleased to have resolved this cold case once and for all. In fact it was the appearance of a different Falcated Duck, a first-winter in Devon in 2006-07 (and again the following winter), that prompted the review of the species, and though there was no new evidence in favour of the Norfolk/Northants bird, a fresh vote on its credentials saw the required majority elevate it to the British list.

Next up

If this means there's hope for other languishing records, let me suggest the next one for the BOURC to consider: Booted Eagle. Unlike the Falcated Duck I didn't see this bird, but it has always struck me as odd that the record was not accepted.
The eagle, a juvenile, was initially found in Ireland in February 1999 – an early date perhaps, but not a deal-breaker for a species which winters in small numbers in the Mediterranean and whose spring migration begins in early March. Its appearance in Ireland, implying a long sea crossing, was cited as problematic, yet we know from photographic evidence that the same individual was later seen in England, so it clearly crossed the Irish Sea under its own steam.
In any case, the great majority of Booted Eagles are migratory, making twice-yearly sea crossings between Europe and Africa, and not always at the narrowest bottlenecks. A few even take in the Canary Islands on their journeys, and vagrants have been documented from as far afield as Madeira and Iceland, proving beyond doubt their ability to endure long journeys over water.

Following at least one bird moving between Ireland and Britain in 1999-2000, it's about time that Booted Eagle was reassessed (Marc FASOL).
The bird's plumage was heavily abraded, but as Keith Vinicombe and I pointed out when we wrote about the record in Birdwatch's Birds of Britain: the Complete Checklist, rather than being a sign of captive origin this could have been caused by damage on board a ship, or perhaps natural damage through stooping into trees or rank vegetation. (Intriguingly, the description from the Kent record noted no feather wear, pointing to the possibility of more than one bird being involved).
Finally, no juvenile Booted Eagles were known in captivity in Ireland at the time, and all three in Britain were accounted for. There could be undocumented juvenile Booted Eagles in captivity, but with no evidence to support this should it really even be considered as anything more than speculation?
A review of this record would be complicated by the fact that committees in Northern Ireland and the Republic of Ireland would also be involved, not just the BOURC. But 20 years after it was first seen, this Booted Eagle certainly deserves to be looked at again.

Wednesday 15 May 2019

Global Big Day sets new participation record

The Cornell Lab of Ornithology has announced that a record-breaking 32,800 birders took part in its annual Global Big Day event on Saturday 4 May.
The figure, up almost 5,000 on the 2018 event, collectively recorded 6,833 species – equating to around two-thirds of the world's birds – in a single day.
As Cornell Lab is quick to stress, science lies behind the fun and furore of the day. eBirders gathered more than 1.85 million bird sightings on 4 May, which are now freely available to researchers, conservationists, and fellow birders. As a global birding team, the world's birders can gather information on where, when, and how birds make use of the landscape – and use that information to aid conservation and research that aims to preserve birdlife worldwide.
Colombia completed a memorable hat-trick, leading the world in terms of number of species for the third year running. The country takes Global Big Day very seriously, and the proof was in the pudding as an astonshing 1,592 species were recorded in Colombia on 4 May – up at least 70 on last year. This remarkable total was collated by a national team of more than 2,300 birders submitting 6,400 checklists. Hot on Colombia's heels was the superb coverage in Peru, where 1,516 species were reported – 26 more than last year, and an incredible achievement that highlights the value of these Andean countries to global biodiversity.

Hummingbirds such as Blue-throated Starfrontlet were among almost 1,600 species reported from Colombia (Josh Jones).
So far more than 48,000 individual checklists have been submitted from the United States alone, amassing an impressive 715 species. Among this was The Cornell Lab's Team Sapsucker, which split into three groups, travelling to Florida, Alabama, and Texas. In each state the team chose a single county to cover on 4 May: limiting to one county to minimize the environmental impact of the big day, and also highlighting how learning a local area very well can result in lots of birds. The combined team total was 242 species. Read more about Team Sapsucker's day here. Meanwhile, in Canada, a total of 371 species was amassed.

Indigo Bunting was among the arriving migrants seen by Team Sapsucker along the Gulf Coast of the United States (Ian Norris).
In Central America, Mexico returned to the top spot this year with 765 species recorded, just edging out Panama (731) and Costa Rica (683).
Africa's numerous and unique birds were critical to the Global Big Day tally, and this year included record contributions from many countries. Senegal had 125 species, up from 0 last year. Rwanda's 203 species came from 27 eBirders – a monumental jump from last year's 75 species. Kenya and South Africa topped the African countries again with 434 and 415 respectively, and this year were rounded out by the excellent 327 species reported from Zambia. Records from undercovered places like Sudan, Niger, Burundi, and Liberia also contributed some rarely seen species, and unique species from Madagascar and São Tomé and Príncipe contributed some excellent island endemic species. The key to higher future totals of Global Big Day will largely rest on contributions from Africa.

White-browed Coucal was one of 434 species reported from Kenya (Jamie MacArthur).
India continued its #1 tradition for species in Asia on Global Big Day, clocking in with 545 thanks to BirdCount India and the active Indian eBirding community. China's total of 452 assure them the silver medal spot, and Malaysia's 380 rounded off the top three.
May is a great month to be birding in Europe, and the 40 countries that contributed to Global Big Day made that very clear. Spain set a new Global Big Day record for the country with an excellent 311 species: the only European country to break the 300 barrier. Sixty different European eBirders reported more than 100 species on the day, including an excellent 125 species from Ireland by Niall and Noel Keogh and Jọo Brito Рapparently a new country big day record. Portugal (225), the UK (222), France (222), and Germany (211) all weighed in with over 200 species.

Common Nightingale, a classic spring songster in Europe, was recorded in 27 countries (Elizabeth Dack).
Australia's very diverse and unique birds make a good turnout there essential to Global Big Day's success. The work by the eBird Australia team never fails to make sure that the island continent is well-represented despite the early winter season. This year's 476 species came from 433 different eBirders – will 2020 be the year to crack the 500 species mark?
The next Global Big Day will take place on 9 May 2020. Find out more about Global Big Day and see all this year's results at ebird.org/globalbigday.

Colombia once again led the way on Global Big Day 2019, recording just shy of 1,600 species.

Crowdfunder launched to save key Spoon-billed Sandpiper wintering site

A new campaign has been launched to raise funds to purchase saltpans at Pak Thale, Thailand, in order to protect key shorebird habitat from encroaching development.
The Inner Gulf of Thailand has long been recognised as a significant site for shorebirds, providing crucial sustenance for both passage and wintering species, as well as residents and local dispersants. A Key Biodiversity Area, the Inner Gulf is Thailand's most critical habitat for coastal shorebird abundance and diversity. Pak Thale is situated within the Inner Gulf, which makes up part of the Pak Thale-Laem Phak Bia Flyway, an area prioritised by the East Asian-Australasian Flyway Partnership.
Familiar to many western birders who have made winter birding jaunts to Thailand, Pak Thale comprises about 123 acres and hosts more than 7,000 waterbirds during the northern hemisphere winter. Of the 50 shorebirds species recorded there, several regular visitors are globally threatened, including the Critically Endangered Spoon-billed Sandpiper and Endangered Great Knot, Nordmann's Greenshank and Far Eastern Curlew.

Spoon-billed Sandpiper winters at Pak Thale in small numbers each year (Baz Scampion).
The East Asian-Australasian Flyway is the most threatened flyway in the world for migratory birds. Rapid economic development of the vital tidal flats, compounded by the increasing impacts of climate change, threaten this ecosystem's future. For migratory birds, losing these critical staging grounds for resting and refuelling ultimately triggers population declines. The Inner Gulf of Thailand is in a unique position as some of these key sites are still undeveloped and available for private ownership.
Rainforest Trust and local partner Bird Conservation Society of Thailand (BCST) seek US$219,999 to purchase and manage approximately 19.5 acres at Pak Thale. They started managing a portion of this habitat during the winter of 2017, which resulted in an increased number of shorebirds visiting the area, particularly Spoon-billed Sandpiper. BCST also noted increased abundance and diversity of invertebrates, the shorebirds' main food source. The partnership intends to replicate this successful model in the proposed protected area to manage and expand existing saltpans as shorebird habitat.
The property will be managed to benefit both the shorebirds and surrounding communities. BCST has been monitoring shorebirds and working with local stakeholders at Pak Thale for more than 10 years. In that time, the organisation has promoted community engagement through bird tourism, education and raising awareness.
To make a donation, please visit the Rainforest Trust crowdfunder page.

Pak Thale saltpans support a huge range of shorebirds in winter (Alex Berryman).

One million species at risk of extinction

A comprehensive new UN report has concluded that a vast number of species worldwide face extinction within decades, with this in turn having great implications on our own survival.
The report states that nature is now declining at a faster pace than at any other period of time in human history and that we, as a species, are ravaging the habitats and ecosystems that support our societies.
The authors of the paper have urged the world's governments to address the global decline of biodiversity together with human-caused climate change. The Report notes that, since 1980, greenhouse gas emissions have doubled, raising average global temperatures by at least 0.7°C. Earth's warming climate is a major driver that is exacerbating the effects of overfishing, widespread pesticide use, pollution and urban expansion.

Deforestation is one of the great drivers behind climatic warming.
The global assessment, compiled by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), draws on 15,000 reference materials, is 1,800 pages long and has taken 175 authors to compile over a period of three years.
Although the report acknowledges that humans have always had a significant impact on the planet, this has increased exponentially since 1950. The world's population has doubled since 1970, with the global economy now four times the size of what it was 50 years ago. By 2050, the global population is expected to approach 9 billion.
To satisfy this insatiable growth, man has decimated the planet's natural habitats Around 100 million hectares of tropical forest have been lost over that period, primarily for cattle production in South America or for palm oil production in South-East Asia. Just 13 per cent of the world's wetlands that existed in 1700 survive today. In contrast, urban sprawl has doubled since 1992.

Evidence suggests that our liberal use of pesticides is decimating insect populations.
Ocean ecosystems are rapidly degrading as temperatures rise towards 2°C above pre-industrial levels. Coral reefs lost to warming and acidifying oceans could cause a collapse in commercial and indigenous fisheries, affecting billions of coastal residents who rely on seafood for protein. At sea, a third of marine fish stocks were being harvested at unsustainable levels in 2015. However, as Robert Watson, a British chemist who served as the panel's chairman, explained: "Once you get to basically 2°C, the models show that only 1 per cent [of coral reefs] can survive.
"Let's be quite candid. We're not on the pathway to 2°C. We're on a pathway to 3-3.5°C. The coral system is truly in trouble."
Remarkable statistics from the report include that more than a third of the world's land surface and nearly 75 per cent of freshwater resources are now devoted to crop or livestock production. It also states that land degradation has reduced the productivity of 23 per cent of the global land surface, up to US$577 billion in annual global crops are at risk from pollinator loss and 100-300 million people are at increased risk of floods and hurricanes because of loss of coastal habitats and protection. Plastic pollution has increased tenfold since 1980.

Worldwide plastic pollution has increased tenfold since 1980.
While the report does suggest that "it is not too late to make a difference", the reality is that it will involve stark and fundamental changes to our own lifestyles and will require governments working together collectively on a global scale. Saying and doing are two very different things, as evidenced by the world's progress towards meeting only four of the 20 Aichi Biodiversity Targets.

Millions of birds vacuumed to death annually in Mediterranean

New research has discovered that millions of birds are being vacuumed up as part of nocturnal suction olive harvesting in the Mediterranean.
From October to January the machinery operates at night and in Andalusia, Spain, an estimated 2.6 million birds are vacuumed to death annually, with the regional government recently putting a stop to the practice. In Portugal, some 96,000 birds are thought to die every winter.

Roosting birds are helpless as the machines hoover up olives at night (Junta de Andalucía).
Vast numbers of birds from central and northern Europe winter in the Mediterranean, and while they are roosting at night the olive picking machines begin their work. The loud noise and dazzling illumination of the lights is thought to disorientate the birds, who are unable to escape and end up being sucked into the machines in large numbers. The trees are stripped at night because cool temperatures help preserve the olives' aromatic compounds.
The Andalusian government has already put a stop to the practice, but other Mediterranean countries – including France, Italy and Portugal – are yet to take action. A separate study found that nearly 100,000 birds die annually in Portugal as a result of suction olive harvesting. The research also found that, between December and January in Alentejo, an average of 6.4 birds died per hectare of intensive olive grove farmland.
This sample is small, and further studies will be undertaken when the harvest season recommences in October. However, the figures are worrying and – if Andalusia is a fair example – then suction harvesting consists of a serious threat to species wintering in the Mediterranean.

A commercial olive harvester at work (Oxbo via YouTube).
Domingos Leitão, from Portuguese Society for the Study of Birds (SPEA), said: "They [the birds] should not be subject to disturbance in the rest period. If the birds in one row of olive trees are frightened, they fly to another; the [EU's] Birds Directive says that they should not be disturbed during the rest period."
Nuno Sequeira added: "When negative impacts like these are detected, the authorities must act swiftly and accordingly. We are talking about hundreds of thousands of dead birds. The lack of regulation allows birds to die as well as other environmental impacts, such as soil erosion and contamination and pollution of aquifers with synthetic chemicals used in intensive and super-intensive agriculture."

British woodpecker photo ID guide

Compared with continental Europe, Britain is relatively poor for woodpeckers. Of the three species that breed here, two – Great Spotted and Green – are relatively common and widespread. Lesser Spotted, however, is among Britain's fastest-declining species. A fourth species, Wryneck, once bred sporadically in southern England, but is now recorded here only as a scarce passage migrant. The three breeding species are very different in appearance and most unlikely to be confused so here we focus on the more tricky task of ageing and sexing them.

Great Spotted Woodpecker (West Stow, Suffolk, 11 December 2010). Woodpeckers are firm favourites, with Great Spotted Woodpecker being particularly popular as it is easily attracted to garden feeders. This bird's bold black, white and red plumage with large white 'shoulder' patches readily identifies it to species; sexing it is less straightforward at this angle as the nape is largely obscured, but the black band below the eye appears to continue onto the back of the head, indicating a female – males have red nape patches (Bill Baston).

Green Woodpecker

This species has an almost exclusively European range, found throughout the Continent except in Iberia, Ireland and the north of Scandinavia. In Britain it occurs widely, though it is absent from the northernmost parts of Scotland. It is highly sedentary.
This large, flamboyant and noisy woodpecker is a familiar inhabitant of woods, heaths, parks and gardens and can also wander out into agricultural land. Although strongly reliant on trees, it also feeds on the ground, usually in open grassy areas, and specialises in plundering anthills.
It normally draws attention to its presence with the familiar loud and distinctive laughing 'yaffle' call but it also 'drums', albeit relatively rarely and rather weakly. When seen it is a highly distinctive bird: large and stout billed, and very strongly undulating in flight.
It is bright grass-green above, with a bright yellow rump and lower back visible when flying away which can momentarily suggest a Golden Oriole. It is pale green-grey below and the flight feathers are weakly barred. The head comprises a vivid red crown and nape, a dark area around a pale staring eye and a dark 'moustache' which is red bordered with black in adult males and wholly black in adult females.
Juveniles resemble the adults, but have dark bars across the face and underparts and white bars above. The sexes differ exactly as do adults according to the colour of the 'moustache'.

Great Spotted Woodpecker

This species has a very large pan-Palearctic range, stretching from Iberia and Morocco in the west to Kamchatka in the east. The British population (of the endemic subspecies anglicus) is resident and largely sedentary, but numbers are supplemented in some autumns by influxes of the stouter-billed nominate form from Scandinavia or beyond.
This is our most familiar woodpecker: a common inhabitant of woodland throughout Britain apart from Ireland and northernmost Scotland. It is a particularly frequent visitor to garden feeders.
It usually gives its presence away with the familiar loud kik call and fast, loud staccato 'drumming' in early spring, usually on trees but also on telephone poles or even metal structures. In flight it undulates very strongly with complete closure of the wings. It is very rarely seen on the ground.
When seen well it is a bird of striking black-and-white contrasts, with large oval white scapular patches, black-and-white barred flight feathers and a splash of brilliant red on the undertail coverts. As with the preceding species, we must look at the head to tell the sexes apart. Males have a discrete red patch on the nape, absent in the female in which the nape is all black.
Juveniles closely resemble adults, but the undertail coverts are paler red, the white scapular patches are darkly barred and the whole of the crown is red with a narrow black border – the overall effect inviting comparison with Middle Spotted Woodpecker of continental Europe.

Lesser Spotted Wodpecker

This diminutive woodpecker also has a large world range, occurring similarly from Iberia in the west to Kamchatka in the east. In Britain the sedentary endemic subspecies comminutus is declining fast and has disappeared from many of its former haunts. It is now spread very sparsely indeed across parts of southern England and is increasingly unlikely to be encountered by chance.
It is associated with mature woodland, parks and orchards, but in winter can wander more widely, sometimes joining parties of tits in river valley alders. It can also wander into reedbeds. A bird on Shetland in October 2012 (a new species for Scotland following its earlier removal from the Scottish list) was presumably of the occasionally irruptive continental nominate form, though it was not possible to prove this hypothesis.
This is a much less conspicuous species than its larger cousins. Its call is also kik, though softer than that of Great Spotted, and its 'drum', although longer than that of Great Spotted, is quieter and often given in two parts. It has a territorial song recalling Common Kestrel or Wryneck – a series of piping notes slowing in tempo towards the end.
When finally seen, this is a truly tiny woodpecker, barely larger than Eurasian Nuthatch. It is compact, small billed and short tailed. Its flight is more fluttery, less dynamic, than its larger relative.
It is black and white, but lacks the prominent white scapular patches of Great Spotted, having instead a pattern of black and white transverse barring right across the back, as well as black and white barred flight feathers. The undertail coverts are white and there is some dark streaking on the white flanks.
Again, the head contains the sexing features, males being red crowned and females dark on top of the head. Juveniles are rarely seen but are browner below. As in the adults, males have some red in the crown.


Juvenile Green Woodpecker (Eccles, Norfolk, 4 August 2011). This Green Woodpecker is, typically, feeding on the ground, its mossy green hues blending well with the grass. Although it already has rich green upperparts and red on the head, it can easily be aged as a juvenile by the prominent heavy dark barring across the face and underparts and the whitish feather tips on the mantle, scapulars and wing coverts. Even as a juvenile it can be aged. Note the wholly dark 'moustache', which identifies it as a female (Neil Bowman).
 

Male Green Woodpecker (Charlton Musgrove, Somerset, 22 May 2012). Caught in its characteristic 'bill up' pose, this Green Woodpecker is clearly an adult. It has no trace of barring in the upperparts or underparts, being instead a smooth green above and greyish below. The red crown and nape and black area around the eye are fully developed, while the obvious red hues in the 'moustache' readily identify it as a male (Oliver Smart).
 

Female Green Woodpecker (Rainham Marshes, London, 28 December 2014). This adult Green Woodpecker closely resembles the bird in the preceding image. It differs, however, in its wholly black 'moustache' which lacks any red hues. It is therefore a female (Dominic Mitchell).
 

Juvenile Great Spotted Woodpecker (Trumpington, Cambridgeshire, 28 July 2009). Great Spotted Woodpeckers, as here, readily attend nut feeders and allow good close-up views. This bird shows a prominent bright red crown with a narrow dark border and some internal dark markings in the otherwise white scapular 'ovals', easily identifying it as a juvenile bird. Note also the rather 'washed out' face pattern and the slightly paler red hues in the undertail coverts (James Hanlon).
 

Male Great Spotted Woodpecker (Florence, Italy, 21 January 2013). This classic portrait of a Great Spotted Woodpecker allows an easy identification. With its dark crown, well-marked face, pure white scapular patches and rich red undertail coverts it can be further identified as an adult, while the discrete red patch on the nape allows us to sex it as a male. As this photograph was taken in Italy, this bird will be of the local subspecies italiae, an identity also suggested by the dull greyish wash on the underparts (Daniele Occhiato / www.agami.nl).
 

Female Great Spotted Woodpecker (Kuusamo, Finland, 18 April 2011). This bird shows almost the same set of features as that in the preceding image. It is therefore an adult, but note that the nape is wholly black, concolorous with the crown. It is therefore a female. This photograph was taken in Finland, so this bird will be of the nominate Scandinavian and Russian subspecies, an identity already hinted at by its rather stout-looking bill (Oliver Smart).
 

Juvenile Lesser Spotted Woodpecker (Hanko, Finland, 10 September 2003). This Lesser Spotted Woodpecker looks typically tiny and compact in the uppermost thin twiggy branches of a tree, and also shows the typical pattern of black-and-white transverse barring right across the back. It can be aged as a juvenile by the strong 'dirty' brown wash right across the underparts. This is a Finnish bird - the sight of a juvenile in Britain is an increasingly rare event (Markus Varesvuo / www.birdphoto.fi).
 

Male Lesser Spotted Woodpecker (Oulu, Finland, 8 March 2008). This Lesser Spotted Woodpecker looks typically tiny and compact in the uppermost thin twiggy branches of a tree, and also shows the typical pattern of black-and-white transverse barring right across the back. It can be aged as a juvenile by the strong 'dirty' brown wash right across the underparts. This is a Finnish bird - the sight of a juvenile in Britain is an increasingly rare event (Harri Taavetti / www.harritaavetti.fi).
 

Female Lesser Spotted Woodpecker (Oulu, Finland, 10 June 2005). This bird is similar to the individual in the preceding image, but has no red anywhere in its plumage, its fore-crown patch being whitish. It is therefore a female. All the Lesser Spotted Woodpeckers illustrated here were pictured in Finland, so all will be of the continental nominate subspecies, though in the field British birds effectively look the same (Harri Taavetti / www.harritaavetti.fi).