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The black-billed capercaillie (Tetrao urogalloides), also known as eastern capercaillie, Siberian capercaillie, spotted capercaillie or (in Russian) stone capercaillie, [2] is a large grouse species closely related to the more widespread western capercaillie.
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 name is the Latin word for a game bird, probably a black grouse. [2] The black grouse was included by Linnaeus in the genus Tetrao but is now placed in the genus Lyrurus. [1] [3] The type species was designated as the western capercaillie (Tetrao urogallus) by George Robert Gray in 1840. [4] [5]
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. They will spend the winter perched in dense forests ...
The black grouse is one of the fastest declining birds in the UK and have moved further north due to climate change. Footage shows endangered black grouse mating ritual on shooting range Skip to ...
The capercaillie is a large grouse, 80 to 115 cm (31 to 45 in) in length, with the female much smaller than the male. It has dark grey plumage with fine blackish vermiculation (wavelike pattern) around the head and neck. The breast is glossy greenish-black. It has a long, rounded tail, an ivory-white bill, and a scarlet crest. [1]
The last UK-wide survey of black grouse was carried out in 2005, and it estimated the overall population at 5,100 males, with 3,400 in Scotland, 1,500 in England and 200 in Wales.
Lekking was originally described in the Tetraonidae (grouse, boldface in cladogram), in particular the black grouse (Swedish: "orrlek") and capercaillie (Swedish: "tjäderlek"), but it is widely distributed phylogenetically among other birds, and in many other animal groups within the vertebrates and the arthropods, as shown in the cladogram.