Black Grouse
Lyrurus tetrix
Male distinctive, with long, lyre-shaped tail and white undertail coverts; shows white wing stripe in flight. Female warm brown with heavy dark barring; compare to smaller and rustier Willow Ptarmigan (known in Great Britain and Ireland as “Red Grouse”), which shows a solidly dark tail in flight. In early spring, males gather around dawn to display, fanning their deeply forked tails and fluffing their white undertail coverts while giving a low churring call. Habitat varies throughout range, but generally favors more open forests and forest margins, as well as upland steppes, heathlands, and moors. In southern parts of range, such as the Alps, favors denser forests with conifer stands.
Identification
The black grouse (Lyrurus tetrix), also known as northern black grouse, Eurasian black grouse, blackgame or blackcock, is a large bird in the grouse tribe. 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, feeding almost exclusively on the needles of conifers. The black grouse is one of two species of grouse in the genus Lyrurus, the other being the lesser-known Caucasian grouse. The female is greyish-brown and has a cackling or warbling call. She takes all responsibility for nesting and caring for the chicks, as typical with most galliforms. The black grouse's genome was sequenced in 2014.
Taxonomy
The black grouse was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Tetrao tetrix. Both Tetrao and tetrix come from Ancient Greek words referring to some form of game bird. The black grouse is now placed in the genus Lyrurus that was introduced in 1832 by the English naturalist William John Swainson.<p>The male and female are sometimes referred to by their folk names, blackcock and greyhen, respectively. These names first occur in the literature with John Ray in 1674. Heathcock and Heathhen are also common names.<p>The black grouse has six recognized subspecies. Black grouse populations differ slightly in size and coloration, with birds increasing in size further east of their range:
- Scientific name
- Lyrurus tetrix
- Authority
- (Linnaeus, 1758)
- Order
- Galliformes
- Family
- Phasianidae
- Genus
- Lyrurus
Range and habitat
Black grouse can be found on open habitats across Europe (Swiss-Italian-French Alps especially) from Great Britain through Scandinavia, Estonia and across Russia. Although believed to once to live in Ireland, it now no longer resides there. In Eastern Europe they can be found in Hungary, Latvia, Lithuania, Poland, Belarus, Romania and Ukraine. There is a population in the Alps, and isolated remnants in Germany, France, Belgium and the Netherlands. It formerly occurred in Denmark, but the Danish Ornithological Society (DOF) has considered it extinct since 2001. The species disappeared from Bulgaria in the 19th century. In Asia, a huge portion of their population can be found in Russia (particularly southern Siberia), though they also inhabit parts of Kazakhstan, Mongolia, China, and possibly Korea.<p>Black grouse are adapted to an extensive array of habitats across Eurasia, though most frequently utilize the transitionary zones between forests and open clearings, especially steppe, heathland, grassland and pasture when near agricultural fields. Depending on the season, they will overwinter in large flocks in dense forests, and feed primarily on the leaves and buds of coniferous and broadleaf trees, such as Scots pine, Siberian larch, silver birch, and Eurasian aspen. Throughout the spring and summer, they tend to favor open spaces to seek potential mates and raise broods, switching their diet to berries, shoots and stems of cranberries, bog bilberries, myrtleberries, and other Vaccinium shrubs. They avoid the most extreme of desert and polar regions.
- Migration
- Resident species
Behavior
Migration pattern: Resident species.
Conservation
Population trend: declining.
- Population trend
- declining
Photos
Distribution
Bird Calls
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