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The common tern [2] (Sterna hirundo) is a seabird in the family Laridae. This bird has a circumpolar distribution, its four subspecies breeding in temperate and subarctic regions of Europe, Asia and North America. It is strongly migratory, wintering in coastal tropical and subtropical regions. Breeding adults have light grey upperparts, white ...
By the second summer, the appearance is very like the adult, and full mature plumage is usually attained by the third year. After breeding, terns moult into a winter plumage, typically showing a white forehead. Heavily worn or aberrant plumages such as melanism and albinism are much rarer in terns than in gulls. [11]
Juvenile Forster's terns are similar to the winter adult. The call is similar to that of common terns, but also some harsher sounds suggestive of a small gull like Bonaparte's gull. This species is unlikely to be confused with the common tern in winter because of the black eye mask, but is much more similar in breeding plumage.
The game commission believes since 2012, 21 common tern nests have been started there but failed. Brian Whipkey is the outdoors columnist for USA TODAY Network sites in Pennsylvania.
The roseate tern's name comes from the rose-colored underparts in the breeding plumage, which can be difficult to see on sunny days. An adult roseate tern catches a sand eel to deliver to a ...
The species has a variety of calls; the two most common being the alarm call, made when possible predators (such as humans or other mammals) enter the colonies, and the advertising call. [21] While the Arctic tern is similar to the common and roseate terns, its colouring, profile, and call are slightly different. Compared to the common tern, it ...
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This is a large tern, second only to the Caspian tern but is unlikely to be confused with this "carrot-billed" giant, which has extensive dark underwing patches. The royal tern has an orange-red bill, pale gray upperparts, and white underparts. Its legs are black. In winter, the black cap becomes patchy. [11]