11 May 2009

2 w Herring/Cantabric Yellow-legged gull (L. argentatus/michahellis lusitanius), 08-01-06





2 w Herring/Cantabric Yellow-legged gull (L. argentatus/michahellis lusitanius), 08-01-06. In spite most opinions received about the individual point to herring gull, this age class make the choice tricky in not obviously light individuals. The structure, moult sequence and extension are very similar in both species.

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