Spurn Migration Festival – Press Release

First for Britain – Spurn to host first National Migration Festival

6th-8th September 2013

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 Bird Migration is one of the great wonders of the natural world and the Spurn Peninsula, on Yorkshire’s East Coast is arguably the best place in Britain to witness this spectacle. At the Spurn Migration Festival visitors will have the chance to enjoy a packed programme of guided migration watches, walks, talks, activities and events led by the expert staff and volunteers of the host organisations. There will also be a celebration of art in the Lighthouse, digi-scoping and photography workshops, demonstrations of bird ringing and a Saturday night Hog Roast.

Day and weekend tickets and a more detailed itinerary will be available in the near future so please look out for more information on our websites: Spurn Bird Observatory – www.spurnbirdobservatory.co.uk, Yorkshire Wildlife Trust www.ywt.org.uk and Birding Frontiers – www.birdingfrontiers.com

The event is hosted by Spurn Bird Observatory and Yorkshire Wildlife Trust in partnership with Birding Frontiers.

Supported by Westmere Farm, Yorkshire Coast Nature, B.T.O., R.S.P.B., Opticron, Swarovski Optic, and Birdnet Information

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Red-billed Tropicbird and August Pelagic

Lanzarote, late August.

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The pioneering pelagics will be continuing off Lanzarote. Some old posts here  and here . I’ll be joining the guys Dani and Juan for a ‘Birding Frontiers’ special 2 day gig over 27th-28th of August. There are a few spare places.

Dani writes: “For the first time the plan is to take  2 sailing boats out to the Banco. and we will be staying overnight! That will be very exciting, as we will be able to chum in the late evening and early morning in the best areas, when there’s much more bird activity. I am really excited with it! We could probably give a couple of short lectures with photos, etc…the day before, and maybe some birding in the island the day after.”

For now I’m wowed by Juan’s photos of Red-billed Tropicbird around the harbour from which we sail… Guess I am hoping they are ‘gettable’ in August.

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All photos above by Juan Sagardia, Lanzarote, May 2013

Posted in Lanzarote, Seabirds | 1 Comment

Eastern Grasshopper Warbler – are they do-able in the hand?

Now that I’ve rediscovered the login details for the BF site, here’s another bird from Shetland, a Grasshopper Warbler trapped last weekend (11th May) in my garden in the south mainland.

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I was chuffed with my first locustella in the garden – looking forward to the next species (and hoping it won’t be too long). The next day I caught it while I had the nets open for migrants in general. When I got it back to the ringing bench I was surprised to find that it was surprisingly short-winged. Plumage-wise it didn’t look like anything other than a fairly standard spring gropper but I rebagged it and went to check the critical biometrics in the BB paper on Eastern Grasshopper Warbler by Paul Harvey and Brian Small – read it here.

I measured the key features: wing 60.5, tail 55, tail/wing thus 0.91, tail graduation 20.0. P2 fell level with P4, and P4 was slightly emarginated. All of which means that it looks better for straminea, if not conclusively so (proportionately, it’s very long-tailed for a small naevia; and both the tail/wing ratio and the tail graduation measurement are close to or beyond the limit for naevia in the various sources given in the BB paper). Paul Harvey nipped down the road and checked my measuring.

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Following the bird on Fair Isle last autumn, which was confirmed as straminea by DNA analysis, some lab work on the one flank feather I found in the bird bag afterwards is going to be the acid test for this bird too.

If it proves to be just a nominate gropper, it does raise the question of how useful the biometrics are, and suggests that all you can reasonably do without a DNA sample is identify the extremes – i.e. that a large majority of straminea might go unproven, even in the hand. All of which reinforces the cautious approach that the authors of the BB paper took I guess.

Posted in Shetland, Uncategorized, Warblers | 1 Comment

More on the Shetland diver

Many thanks to all those who have commented so far. Still in the process of checking out all the angles but an encouraging response so far.

Keith Brockie posted an interesting comment earlier this morning:

Are there any photos showing the side of the neck? The easiest way to separate a summer plumaged arctica from pacifica is the extent of the white neck stripes. In arctica they extend right down the neck ‘flowing’ with the belly stripes. In pacifica the neck stripes end before the base of the black throat patch, look at any photos and it can be easily seen and to my knowledge has never been commented on!

The difference Keith describes seems obvious in some photos, but less so in some others for example this Pacific in Manitoba, by Martin Scott.

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Sadly, I don’t have much in the way of decent, side-on images of the Grutness bird with the neck fully visible. This is probably the ‘best’…

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Or maybe this one

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World’s Rarest Birds – Book review

The World’s Rarest Birds

by  Erik Hirschfeld, Andy Swash and Robert Still, (2013) Princeton University Press

ISBN 978-0-691-15596-8

Reviewed by Keith Clarkson, May 2013 on behalf of Birding Frontiers

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This remarkable book vividly depicts the 590 most threatened birds on Earth.  It provides up-to-date information from Birdlife International on the threats each species faces and the measures being taken to save them.  Impressively, the book features photographs of 515 of the most threatened species.  The remaining 75 species, for which photographs do not exist, are illustrated by the wildlife artist, Tomasz Cofta, who sourced museum specimens and past and present descriptions to reconstruct these unique artworks.

The ‘coffee table’ format belies the extraordinary amount of research and the sheer volume of information presented.   The authors have produced a reference book of outstanding quality.  But this is no ordinary reference book to be occasionally picked off the shelf, dusted down and browsed rather it is a treasure chest of stories of discovery, loss and re-discovery. I found each visit to these beautifully presented pages unearthed more gems and yet more extraordinary insights into our most threatened birdlife.

Strangely, even though the book focuses on the parlous state of our natural world and is functional in its reading style, it was a surprisingly uplifting read.  I found myself starting to relate to the predicament of birds I had previously never heard of, birds that inhabited remote islands and far-away countries I have never been to and birds which, until now, had passed me by. Having read the book I feel inspired, I want to make a difference, I want to do my bit to help safeguard our globally most threatened birdlife.

So how did this change come about?

The World’s Rarest Birds, which evolved from Birdlife International’s Rare Bird Yearbooks, uses the IUCN 2012 Red List as its source reporting on 197 ‘Critically Endangered’,  389 ‘Endangered’ and four more species, the Hawaiian Crow Corvus hawaiiensis, Guam Rail Gallirallus owstoni, Alagoas Curassow Mitu mitu and Socorro Dove Zenaida graysoni that are only known to exist in captivity.

Perhaps surprisingly, the list of Critically Endangered species includes fourteen species tagged ‘Possibly Extinct’ or ‘Possibly Extinct in the Wild’, a third of these have not been seen for over fifty years and may well be extinct.  However, time and time again as you go through the species accounts there are tales of birds thought to have been extinct being rediscovered. This phenomena has led to the adoption of the term ‘Romeo Error’.

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The introductory chapters set the scene – describing how the IUCN define thresholds of rarity to produce the Red List categories, teasing the enquiring reader with the 60 bird species for which there is insufficient data to assess their status- the ‘Data Deficient’ category.  Here the appetite of the modern-day bird hunter is whet and probably drawn to New Guinea and its islands and the Democratic Republic of Congo, Cameroon and adjacent West African countries which together almost half of all 29 Data Deficient species.

The distribution of threatened birds is then explored.  Revealing, not surprisingly, that the countries with the greatest proportion of globally threatened birds are islands whereas the largest number of globally threatened species are found in Brazil, Peru, Indonesia, Colombia and Ecuador.  The majority of globally threatened birds only occur in a single country and three-quarters are associated with forests.  Seabirds are the most threatened group of birds with 38% globally threatened or Near Threatened.  Alarmingly, 200 species are now believed to be restricted to single sites! The factors driving these alarming figures reveal that agriculture and aquaculture, logging, hunting and invasive species are the most serious threats.  A summary of the impacts of these and other key threats is provided.

The body of the book is the species accounts of the most threatened birds.  This part of the book is divided into seven regional sections.  Each region includes a well presented summary of the key threatened bird hotspots and the main conservation challenges followed by a comprehensive illustrated directory of the most threatened birds in the region. Each entry includes a photograph or painting of the bird, a distribution map, the IUCN Red List category, population trend and size and the key threats for each species plus a concise summary of the issues and a QR code which provides a direct link to the species factsheet on the Birdlife International website.  The latter is freely accessible to readers and updated annually providing some inspired added value and continuity.

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It is here in the body of the book, flitting from section to section, that I started to make connections.  Close to home I was shocked to see that Velvet Scotor Melanitta fusca is now classed amongst the most threatened birds in the world as the global population has collapsed by more than 50% in the last ten years – it makes those sightings of a handful of wintering birds in Filey Bay, on the Yorkshire coast, ever more significant.

I was already familiar with the Spoon-billed Sandpiper story, thanks to the fantastic publicity machine of the RSPB and Wildfowl and Wetlands Trust, but having recently witnessed a flock of over 40 Spotted (Nordmann’s) Greenshank, near Thailand’s Pak Thale Spoon-billed Sandpiper site I was shocked to find out that the global population of the Spoonies less sensational neighbour may lie somewhere between only 330-670 individuals. At the same locality I watched large flocks of Great Knot feeding on the muddy shores of the Gulf of Thailand unaware that the destruction of the Saemangeum wetlands in South Korea appears to have resulted in the Great Knot population declining by some 90,000 birds.   By now the stories were becoming personal and discussions with fellow travelling birder, Simon Roddis, highlighted that many of these birds can be seen with relative ease belying there true rarity and vulnerability.

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I am also, thanks to the outstanding work of the SAVE (Save Asian Vultures from Extinction) project, familiar with the collapse of Gyp vulture populations in India and South-East Asia but was unprepared to read that the population of the Egyptian Vulture Neophron percnopterus  which stretch across  Europe, Africa and Asia is Endangered and the global population may have fallen to between 13,000 and 41,000 individuals.

Evermore curious I started to read more intensely, noting the demise of the Yellow-crested Cockatoo Cacatua sulphurea of which the total global population is less than 14,000 birds and yet, in a 12 year period towards the end of the 20th Century over 100,000 birds were exported legally from Indonesia.

But it isn’t all depressing reading, the re-discovery of species assumed extinct always gives hope perhaps none more so than the story of the New Zealand Storm Petrel Oceanites maorianus, known only from three specimens taken in the 19th Century, prior to being rediscovered in 2003, near the Mercury Islands.  Subsequently a flock of 16-20 were photographed off Little Barrier Island.

Even more rewarding is to read of back-from-the-brink conservation success stories and if you search hard enough they are in there.  In 1981 there were only seven individual Asian Crested Ibis Nipponia nippon in the wild.  Since then, thanks to conservation efforts, the population has increased steadily to over 500 birds in Shaanxi province, China and there are now plans to re-introduce them in Japan and South Korea.  Similarly, the Chatham Island Black Robin Petroica traversi is distinguished by recovering from the lowest population of any wild bird – three males and two females, one of which proved to be infertile! Following extensive habitat creation on Mangere Island the population has increased to 224 individuals evenso the spectre of chronic in-breeding and loss of genetic diversity hangs over the population.

In Simon’s words ‘this is a book that should be presented to every Environment Secretary or the equivalent Minister, of every country on Earth!’.

The stories go on and on in this beautifully presented, monumental book.  Go on treat yourself, at £34.95 it will provide hours of insight and inspiration and the purchase contributes towards supporting the BirdLife International Preventing Extinctions Programme which amongst other conservation successes has backed the Madagascar Pochard Aythya innotata  project resulting in a quadrupling in the population and has established a breeding centre for Spix’s Macaw Cyanopsitta spixii, from which birds will be released into the wild later this summer.

Keith Clarkson is the warden at Bempton RSPB reserve, EastYorkshire, active in global conservation measures relating to birds and one Britain’s leading pioneers of visible migration watching.

Posted in Books | 1 Comment

Pacific Diver in Shetland?

Grutness, 16th May 2013

by Roger Riddington and Paul Harvey

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A quick post from Shetland to get some feedback about an interesting diver seen earlier this evening. At about 7.30 I got a phone call from Paul Harvey, who’d just seen a stunning, summer-plumaged Black-throated-type diver in the sheltered waters of Grutness voe. Paul was out birding with bins only, was some distance from his car/scope and needed a second opinion – the fact that he couldn’t see a thigh patch on the bird made my journey time that much quicker. Shame I don’t get a company sports car from BB but there you go.

To cut a long story short, I picked up Paul, reunited him with his scope and then we started to grill the bird. The photos below tell their own story really, a bird with a solidly dark flank and an arrestingly small-looking bill. I started to try to photograph it – not so easy in low light, with the scope at x60 and the camera zoomed in to max, but at least there is something. We watched it for about 15-20 minutes, getting gradually more twitchy about it, before it (sadly) flew off strongly. In flight, there was a neat, even black rim around the flanks, with no sign of any indent towards the thigh/rump. At no stage did we see any white in the thigh either, even though the bird was typically sitting quite high in the water.

And – well there’s not much more to say. We’d be grateful of any constructive input! Pacific Diver is a major challenge in summer plumage and it would be interesting to see what people think. Seeing on average one Black-throat a year in Shetland doesn’t make us best placed to judge these things!

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P1060690bA quick interjection from M.G. Not an easy call. Glad that RR and PVH have taken the risk of putting this bird ‘out there’. For me the photo above seems compelling. The area below the rear edge of the wing coverts is the place which is white in Black-throated Diver and dark in Pacific Diver. It appears to be dark, and this concurs with their field views. The bill looks pretty titchy too doesn’t it – and the head/bill combo feels all Pacific. They are asking the critical question in the right spirit. Hope it gets seen again- for them, and for us to learn! As already indicated, comments welcome.

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Posted in Divers, Shetland | 8 Comments

Grey-headed Wagtail ID

Necklaces on females

by Sindre Molværsmyr and M.G. 

It’s long been known that adult male Grey-headed Wagtails (thunbergi) can show variable dark feather across the yellow breast, on some creating something of a little necklaced effect. Females can too. Sindre reports on observations made on breeding birds in Norway, which may be useful in both spring and autumn migrants  and not just of adult males:

“Male thunbergi are usually quite simple to separate from male flava, the females on the other  hand can be a different story. Often they can look surprisingly similar. I
think that dark breast markings can be a way to distinguish some female
thunbergi from flava. At least at summer (when I have the most experience).
Have also seen dark breast markings on thunbergi migrating, so most likely
it can be used all year around. I will not claim that it is a secure ID
criteria, as I haven’t seen enough of either ssp. to do that, but it
should be looked more closely in to.”

IMG_4131Female thunbergi. Though breast centre slightly wind-blown, still dark spots also present in middle of the breast.

Male thunbergi

 Male thunbergi. Males are more variable. This one has dark marking in the breast, but dark markings more randomly placed than in females.

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above 2: the same female thunbergi in both photos. Old brown feathers in wing should indicate 2cy? Makes me wonder if the breast markings this bird shows are more common in 2cy birds. The bird also lacks yellow tones on flank and undertail.

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Above, 3 photos of a pale female thunbergi. It’s mate is pictured below.

Gave a quite pale and brown expression in field. On photos one can see yellow tone in rump and on flanks. This one also shows some dark on breast, but more restricted than “normal” thunbergi.

male thunbergi paired to pale female above.

All photos and text above by Sindre Molværsmyr

Posted in Wagtails | 2 Comments