"portlandica" is a term used in the Handbook for the 1st summer plumage of Arctic Tern. This plumage is rarely seen in NW Europe n, the following are key identification features for this individual: - very short black legs - short entirely black bill - overall smaller and daintier than Common Tern, particularly the small neatly rounded head - largely white forehead, with a black triangle extending backwards from the eye ..........................Found this ont net from cambridge in 2003.....................
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