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 Yellow-legged Gull Larus michahellis

Presumed 4cy (3W), February 10th 2010, Warks


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3W Yellow-legged Gull, Warks, Feb 2010

A. R. Dean

An interesting combination of feather tracts for an individual in February. The wing has apparently second-generation secondaries and greater coverts but third generation primaries (and appears to have small mirrors on p9 and p10). The wings resemble a bird in transition during late summer/autumn from 2S to 3W. Third generation primaries (with small mirrors on both p9 and p10) must indicate age is 4cy and feathers of inner wing presumably 'retarded'. The all-white, adult-like tail also equates with 4cy.


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