One of the objectives of this trip was to get some data on eastern Yellow-legged Gulls. My previous trips here had all been in autumn when moult prevented me from getting a good look at the primary pattern. Here is a nice one from today: note the rather long tongue on P10, a fully white tip to P10 (rather than a mirror) and virtually no dark on P5 (just a grey smudge on the outer web). So overall, rather little black and lots of white.
Saturday, 1 January 2011
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