Aberrant Herring Gull, England (1 Viewer)

Brett Richards · Sep 17, 2012

The attached photos, taken at Flamborough Head today, appear to show an aberrant moulting adult Herring Gull. What is strange is the 'double' tertial crescent, and the grey primary showing beyond. This latter seems to me to be P7 from its length, but it lacks any black. P6 & P8 appear to be missing. P9 is overlapping P10 as normal. Similar on both sides.

I would like to know if my interpretation of things is correct.

Brett

Jane Turner · Sep 17, 2012

Did you see it with its wings out?

Brett Richards · Sep 19, 2012

Jane Turner said:
Did you see it with its wings out?

No, I only saw it sitting on the water.

Brett

Jan-Paul Charteris · Sep 19, 2012

The double tertial crescent is just a newly growing tertial I presume, but the grey primary looks a bit odd! Overall appearance looks like could be LBB x Herring maybe? But still wouldn't explain that primary. Might be worth putting this on the ID section instead?

Aberrant Herring Gull, England (1 Viewer)

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Brett Richards

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Jane Turner

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Brett Richards

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Jan-Paul Charteris

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