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Yellow Legged Gull

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Old Wednesday 31st December 2008, 21:45   #26
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Quote:
Originally Posted by Richard Klim View Post
BOURC 2006. The British List: A Checklist of Birds of Britain (7th edition). Ibis (2006), 148, 526–563:

http://www3.interscience.wiley.com/c...19822/PDFSTART

Includes all subspecies formally accepted by BOURC as recorded in Britain (eg not atlantis). Doesn't reflect recent splits of cachinnans and smithsonianus.

Richard
Thanks, Richard and Col Boris, that's v helpful. Sorry, I hope I haven't hijacked the thread!!
Ken

Last edited by Surreybirder : Wednesday 31st December 2008 at 22:39.
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Old Thursday 1st January 2009, 10:49   #27
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Thanks, Harry,
What about heuglini?
Sorry, was treating heuglini as a Lesser Black-backed type (your question specified Herring types)! That's not on the British list either, and, given the extent of variation within graellsii, I think it would take a ringing recovery at this stage to get the taxon accepted.
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Old Thursday 1st January 2009, 15:54   #28
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Sorry, was treating heuglini as a Lesser Black-backed type (your question specified Herring types)! That's not on the British list either, and, given the extent of variation within graellsii, I think it would take a ringing recovery at this stage to get the taxon accepted.
Thanks, Harry. I guess I was treating 'herring' in a rather liberal way. Back in the dark ages, when I started birding, herring/lesser bb were given as an example of a 'ring species' that gradually changed as it went around the world until the two 'ends' were different species. I'm not sure that the concept of a ring species has survived all the various taxonomic debates!
At least I know not to spend too much time looking out for heuglini round Surrey!

I've now had the chance to read the Ibis paper. Their taxonomic recommendations (=decisions?) are quite different from those of Olsen and Larsson. E.g. vegae becomes a sub-species of American Herring Gull (Larus smithsonianus) and barbarensis becomes a sub-species of Lesser bb gull (L fuscus). I wonder where it will all end? In the meantime, it seems as if you have to identify most of the large gulls to sub-species level to be sure of keeping track of which species you have seen at any given time!
Ken

Last edited by Surreybirder : Thursday 1st January 2009 at 17:23.
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Old Thursday 1st January 2009, 20:39   #29
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I'm just glad I don't bother with subspecies.
It's hard enough sorting out Gulls at Species level!
Alan
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Old Tuesday 21st January 2014, 09:33   #30
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Istanbul

Chris Gibbins, Birding Frontiers, 20 Jan 2014: The 'intermediate' Yellow-legged Gulls of the Bosphorus.
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Old Saturday 14th May 2016, 09:23   #31
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Hammouda et al

Hammouda, Hamza, Ayadi, Pearce-Duvet & Selmi (in press). Assortative mating for carotenoid colouration but not size in the Yellow-legged Gull Larus michahellis. Bird Study. [abstract]
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