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Gaivota-de-bico-riscado | by J.M.N.
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Gaivota-de-bico-riscado

18-01-2011 Aveiro, Portugal

Ring-billed Gull (Larus delawarensis) - 2nd winter

This is the commonest American gull on this side of the Atlantic. This particular individual is quite advanced in plumage development, having a completely white tail (seen in flight), but the iris is still dark.

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Taken on January 18, 2011