Lesser Black-backed Gull 2CY, May 27-30 2016, Utrecht, the Netherlands.
below: Lesser Black-backed Gull 2CY, May 27 2016, Utrecht, the Netherlands.
Many inner wing-coverts and the upper tertials were replaced on the wintering grounds, now 2nd gen coverts still looking fresh, and contrasting with worn juvenile outer coverts.
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below: Lesser Black-backed Gull 2CY, May 30 2016, Utrecht, the Netherlands.
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