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Gamebird hybrids : ウィキペディア英語版
Gamebird hybrids

Gamebird hybrids are the result of crossing species of game birds, including ducks, with each other and with domestic poultry. These hybrid species may sometimes occur naturally in the wild or more commonly through the deliberate or inadvertent intervention of humans.
Charles Darwin described hybrids of game birds and domestic fowl in ''The Variation of Animals And Plants Under Domestication'':
''Mr. Hewitt, who has had great experience in crossing tame cock-pheasants with fowls belonging to five breeds, gives as the character of all 'extraordinary wildness' (13/42. 'The Poultry Book' by Tegetmeier 1866 pages 165, 167.); but I have myself seen one exception to this rule. Mr. S. J. Salter (13/43. 'Natural History Review' 1863 April page 277.) who raised a large number of hybrids from a bantam-hen by Gallus sonneratii, states that 'all were exceedingly wild.' () utterly sterile male hybrids from the pheasant and the fowl act in the same manner, "their delight being to watch when the hens leave their nests, and to take on themselves the office of a sitter." (13/57. 'Cottage Gardener' 1860 page 379.) () Mr. Hewitt gives it as a general rule with fowls, that crossing the breed increases their size. He makes this remark after stating that hybrids from the pheasant and fowl are considerably larger than either progenitor: so again, hybrids from the male golden pheasant and female common pheasant "are of far larger size than either parent-bird.' (17/39. Ibid 1866 page 167; and 'Poultry Chronicle' volume 3 1855 page 15.)"

==Pheasant and grouse hybrids==

Hybrids have been obtained between the "ornamental" species of pheasants e.g. Lady Amherst's, Silver and Reeves Pheasants.
Natural pheasant and grouse hybrids have been reported:
* Capercaillie or wood grouse (''Tetrao urogallus'') and black grouse (''Tetrao tetrix'') in the UK〔Handbk Brit. Birds, 5: 210〕
* Dusky or blue grouse (''Dendragapus obscurus'') and common pheasant (''Phasianus colchicus'') near Portland, Oregon, USA〔Anthony, 1899. Auk, 16: 180〕
* Sharp-tailed grouse (''Tympanuchus phasianellus'') and prairie chicken (''Tympanuchus cupido'') 〔1918. Wilson Bulletin, 30: 1-2, plate〕
* Willow ptarmigan (''Lagopus lagopus'') and spruce grouse (''Falcipennis canadensis'')〔Taverner, 1932. Annual Report, 1930, National Museum of Canada, p. 89 with plate〕
* Dusky or blue grouse (''Dendragapus obscurus'') and sharp-tailed grouse (''Tympanuchus phasianellus'') at Osoyoos, British Columbia, 1906 (Dr. John W. Aldrich)
* Common pheasant (''Phasianus colchicus'') and prairie chicken (''Tympanuchus cupido'') at Ellendale, North Dakota, 1933

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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