Black Grouse aka Eurasian Black Grouse
Grouse
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The Black Grouse (Tetrao tetrix) is a large bird in the grouse family. It is a sedentary species, breeding across northern Eurasia in moorland and bogs with some trees. The Black Grouse is closely related to the Caucasian Black Grouse. These birds have a group display or lek in early spring.
As with many Gamebirds, the male is larger than the female at 49-55 cm compared to her 40-45 cm length. The cock is very distinctive, with black plumage, apart from red eyebrows and a white wingbar, and a lyre-shaped tail, which appears forked in flight. His song is loud, bubbling and somewhat dove-like.
The female is greyish-brown and has a cackling call. She takes all responsibility for nesting and caring for the chicks, as is typical with gamebirds.
The male and female are sometimes referred to by their folk names, Blackcock and Greyhen respectively.
Reproduction
Black grouse have a very distinctive and well recorded courtship ritual or game. At dawn in the spring, the males strut around in a traditional area and display whilst making a highly distinctive mating call. This process is called a Lek - the grouse are said to be leking
Conservation
This species is declining in western Europe due to loss of habitat. They have much declined in the UK (especially England), having disappeared from many of their former haunts. They are now extinct in Staffordshire, Lancashire, Derbyshire, Exmoor, East Yorkshire, New Forest, Nottinghamshire, Worcestershire, Quantock Hills, Cornwall, Dartmoor, Kent, Wiltshire and Surrey.
A program to reintroduce Black Grouse into the wild started in 2003 in the Upper Derwent Valley area of the Peak District in England. 30 grouse were released in October 2003, followed by 10 male grouse in December 2004 and a further 10 male and 10 female in April 2005. The program is being run jointly by the National Trust, Severn Trent Water and Peak District National Park.
References
- BirdLife International (2004). Tetrao tetrix. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
Source: BirdNature.com
Relevant Web Resources: BirdNature.com
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