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ANATOMY OF BIRDS |
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Birds and Birding's Guide to:Watching THE PLOVER-LIKE BIRDSTHE GULLS AND THEIR ALLIESThe Kittiwakes(Rissa), of which there are three forms, are separated mainly on the ground of”the hind toe being rudimentary or entirely absent. With the exception of a bluish gray mantle the plumage is also pure white, the legs and feet in the Common Kittiwake (R. tridactyla) of the North Atlantic, and its subspecies, the Pacific Kittiwake (R. t. pllicaris) of the North Pacific, being black or dusky and bright red in the Red-legged Kittiwake (R. brevirostris) of the coasts and islands in Bering Sea. In writing of the birds of the Pribilof Islands, Mr. Palmer says the last is the”most beautiful species on the islands. Always . graceful, whether on the cliffs or flying, its beautiful form and delicate snow-white plumage, with its vermilion feet, adds much to the avifaunal wonders of these islands. ”It breeds abundantly on the Pribilofs, placing the nest, which Mr. Elliott says is quite substantially made of dry grass and moss cemented with mud, on the most inaccessible shelves and points of rock, where it can seldom be reached unless a person is lowered down to it by means of a rope passed over the cliff. The eggs are two, rarely three, in number. previous bird species next bird species
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