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( Swan)
6-7 living, see text. The word "swan" is derived from Old English swan, akin to the German Schwan and Dutch zwaan, in turn derived from Indo-European root *swen (to sound, to sing), whence Latin derives sonus (sound). (Webster's New World Dictionary) Young swans are known as cygnets, from the Latin word for swan, cygnus. An adult male is a cob, from Middle English cobbe (leader of a group); an adult female is a pen from the Welsh word for loud, pynne. The Northern Hemisphere species of swan have pure white plumage but the Southern Hemisphere species are mixed black and white. The Australian Black Swan (Cygnus atratus) is completely black except for the white flight feathers on its wings; the babies of black swans are light grey in colour, and the South American Black-necked Swan has a black neck. The legs of swans are dark blackish grey, except for the two South American species, which have pink legs. Bill colour varies the four subarctic species have black bills with varying amounts of yellow, and all the others are patterned red and black. The Mute Swan and Black-necked Swan have a lump at the base of the bill on the upper mandible.
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Swan Subcategories
Swan Articles
Stopping Collagen Swan Song by George Collagenelife
Oh how the years slip away. Sometimes it does not seem like so long ago that you were still a twinkle in your mother’s eye. Then the glorious day finally arrived that was, in fact your arrival. Like most babies, you probably had the chubby cheeks goi...
Complete Information on Binswanger's disease by Juliet Cohen
Binswanger's disease (BD), also called subcortical vascular dementia. Binswanger's disease is a rare form of dementia characterized by cerebrovascular lesions in the deep white-matter of the brain, loss of memory and cognition, and mood changes. Bins...
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