Arctic Tern in summer
What to look for to tell apart beautiful, long-winged Arctic, Common, and Forster's Terns
Contributed by Kenn Kaufman
Published:
June 19, 2009
Contributing Editor Kenn Kaufman compares bill shape and color, and the legs, wings, tails, and underparts of Arctic, Common, and Forster's Terns in their summer adult stage. In addition, Kaufman explains why some far-flying Arctic Terns are able to experience almost continuous daylight throughout the year, and he lays out the origin of the term "portlandica plumage" and why it is now treated as a historical curiosity.
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