Yellow-legged Gull or Great Black-backed Gull?

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paseriformes
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Yellow-legged Gull or Great Black-backed Gull?

Post by paseriformes » Mon Oct 20, 2014 9:21 pm

This picture was taking in Madrid. I appreciate some comments about the ID of this gull.
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lou bertalan
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Re: Yellow-legged Gull or Great Black-backed Gull?

Post by lou bertalan » Tue Oct 21, 2014 12:20 pm

ola delfín,

it's definitely a michahellis. GBBG has shorter wings and doesn't moult coverts in first autumn.

best wishes,

lou
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