Some background reading in the meantime for UK and Irish readers contemplating vagrancy!
https://britishbirds.co.uk/sites/default/files/2017_V110_N10_666-674_AzYLG.pdf
Thanks Harry for clarification on wing pattern (and grey scales!) - as always your expertise is appreciated on the ID forum! I am clearly so far out of my depth now, so I will shut up and swim quickly to shore and watch the remaining discussion with interest ;)
Like Harry, I too wondered about the possibility of a flight shot when I was looking at this earlier this morning, I think I recall p9 is supposed to have just a white tip or no mirror on Atlantics (I’m assuming for now, these are the same race as I saw on the Canaries?) but can’t remember at...
This looks look like very much the Atlantic Yellow-legged Gulls I saw on the Canaries (a few years ago) (Larus michahellis atlantis) moulting to winter plumage. The short strong legs (some were very pale yellow!) and very pale iris with red orbital ring were defining features as were the heavily...
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