File:The world's birds a simple and popular classification of the birds of the world (1908) (14562224937).jpg

Identifier: worldsbirdssimpl00finn (find matches)
Title: The world's birds a simple and popular classification of the birds of the world
Year: 1908 (1900s)
Authors: Finn, Frank
Subjects: Birds
Publisher: London, Hutchinson & co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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accabis rufa). Among the Grouse, the Ryper, or Willow-grouse(Lagopus albiis), ranges all round the world in thehigh north; it is very similar to our Red Grouse(L. scoticus), confined to the British Islands. TheRyper, however, has always a white belly and wings,and turns white in winter, this being the Ptar-migan commonly seen for sale in poulterersshops. It does not occur naturally in Britain.The other Ptarmigans also all turn white, and arefound on high mountains in the Northern hemi-sphere in both worlds, one species (L. miUus)being found in Scotland. Our Blackcock (Lyrurustetrix), almost the only game-bird with a forkedtail, is found all across the Old World, but thelarge Capercailzie (Tetrao urogallus), the biggestof all Grouse, is replaced in Eastern Siberia byallied species. Hybrids between these two birdsoften occur, and hybridism is more frequent amongGrouse than in any other birds. Of the American Grouse, the Ruffed Grouse(Bonasa umbellus) is the most familiar ; it is closely
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