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Old Monday 7th September 2009, 20:14   #6
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Join Date: May 2007
Location: Finland
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Originally Posted by njlarsen View Post
It can possibly be a least tern, but not a first cy: there is way to much black on the cap. Compare to the one in this thread.

No, it is a 1cy Lest Tern. Note how the primaries (and primary coverts) become gradually whiter inwards, which is a certain sign of a 1cy tern. Older terns show a clear moult limit between worn and dark outer primaries and fresher inner primaries. The bird has a white crown, which can be seen if the photo is lightened.
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