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Common Tern, Adult

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COMMON TERN
Sterna hirundo Linnæus
Other Names.—Sea Swallow; Striker; Wilson’s Tern.

Description.—Smaller than a gull, with long, deeply forked tail. Adults in summer: Top of head glossy black; rest of body pearl-gray, save throat, sides of head, and tail, which are white, the outer tail-feathers with outer webs pearl-gray; bill red, with black tip; feet orange-red. Adults in winter: Similar, but with forepart of head and underparts white, and bill blackish. Immature: Similar to adults in winter, but plumage considerably washed with brownish, lesser wing-coverts slaty, and tail short, though forked. Length: 15 inches.

Range in Pennsylvania.—A rather irregular migrant.

Author
An Introduction to the Birds of Pennsylvania
By George Miksch Sutton
Published in 1928
Available from gutenberg.org
Posted on
Sunday 30 May 2021
Keywords
Birds
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