Could it be a hybrid Common Gull x Ring-billed Gull?

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Spinus
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Joined: Wed Jan 27, 2010 11:29 pm

Could it be a hybrid Common Gull x Ring-billed Gull?

Post by Spinus » Thu Feb 28, 2013 7:26 pm

Hi
I saw this gull few days ago. I'm wondering is it possible to be a hybrid with delawarensis. The eye is extreme pale, mirror on P9 looks like in RBG and bill is quite strong with nice black band.

Adam
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adriaens
Posts: 226
Joined: Sun Sep 27, 2009 9:24 pm

Re: Could it be a hybrid Common Gull x Ring-billed Gull?

Post by adriaens » Thu Feb 28, 2013 11:53 pm

Rather than a hybrid, this is far more likely a Russian Common Gull (heinei).

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