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The western capercaillie (Tetrao urogallus), also known as the Eurasian capercaillie, wood grouse, heather cock, cock-of-the-woods, or simply capercaillie / ˌ k æ p ər ˈ k eɪ l (j) i /, [3] is a heavy member of the grouse family and the largest of all extant grouse species. The heaviest-known specimen, recorded in captivity, had a weight ...
The genus Tetrao was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. [1] The genus name is the Latin word for a game bird, probably a black grouse. [2]
However, the Cantabrian subspecies is not as reliant as other Western capercaillies on pine forest, a type of habitat which is relatively scarce in the Cantabrian mountains. [3] The Cantabrian capercaillie feeds in deciduous woodland, and occurs in mature beech forest and mixed forests of beech and oaks (at elevations ranging from 800 to 1,800 ...
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Compared to the western capercaillie, it is slightly smaller in size with a slimmer body profile and longer neck, has a black beak (hence its name) instead of being horn-colored, and a longer, more spatulate tail. The eastern capercaillie has a somewhat glossy bluish-black head and neck down to a metallic turquoise breast.
The rackelhahn or rackelwild is a hybrid between the western capercaillie (Tetrao urogallus) and the black grouse (Lyrurus tetrix). [1] [2] [3] References
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The black grouse (Lyrurus tetrix), also known as northern black grouse, Eurasian black grouse, blackgame or blackcock, [4] is a large game bird in the grouse family. It is a sedentary species, spanning across the Palearctic in moorland and steppe habitat when breeding, often near wooded areas.