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Tetrao urogallus (Western Capercaillie)


English: Western Capercaillie, Eurasian Capercaillie
Russian: Обыкновенный глухарь

German: Auerhuhn

French: Grand Tetras

Mongolian: Эгэл сойр, Ердийн сойр

Japanese: ヨーロッパオオライチョウ (Yoroppa-o-raicho)

Body length: ♂ 74-90 cm,  ♀ 54-63 cm

Sedentary in mature coniferous, preferring areas with old pines on rocky ground with abundance of berry-bearing shrubs and moss and with element of aspen and spruces, avoiding open ground. Spectacular communal display in late spring.

Identification: Very large, ♂ being about a third larger than ♀. Takes off with very loud wing noise; longer flights fast and direct, with bursts of rapid wingbeats interspersed between glides.

  • ♂: Not likely to be confused with any other grouse through mere size; that aside, has very long tail (cocked and spread as a fan during display), long neck (erect in display, with raised feathers) and dark colours. Heavy, strongly curved bill straw-yellow. A conspicuous rounded, white patch at base of forewing. In flight characteristic, with long, folded, straight tail and long, thick, outstretched neck making wings look comparatively small.
  • ♀: Considerably smaller than ♂, still distinctly larger than ♀ Black Grouse. In spite of size difference can be confused with Black Grouse, which it resembles, the two being brown, barred dark, and found in similar habitat, but told by: throat and parts of upper breast unmarked orange-brown; more obvious strings of white patches on scapulars (‘braces’); often slightly paler and more rufous plumage; slightly longer and more rounded tail, which is somewhat more rufous (though rufous tinge to some degree often found on ♀ Black Grouse, too).


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