Name:Greater Sage-grouse
Alias:Greater Sage-grouse,Centrocercus urophasianus
Outline:Landfowl
Family:Cocciformes G.family S.Genus
length:48-76cm
Weight:2.3-3.2kg
Life:No textual research information is available
IUCN:LC
The Sage grouse (Centrocercus urophasianus), also known as Greater Sage-grouse without subspecies, is the largest grouse in North America.
Sage grouse do not fly much except up and down trees. Because of their clumsy body, they flap their wings violently when they first take off, and make a ge-ge-ge sound, while the female chicken makes a gua-gua-gua sound. When flying, the rise speed is slow, and after reaching a certain height, the wings are spread to glide from high to low, but never fly over the forest canopy. When gliding, it can change direction flexibly to adapt to changes in mountain slope and facilitate crossing in forest clearings. When landing due to the balance of the body again wings, usually land in a tree, and then, observe the surrounding movement, make sure that there is no danger before flying to the ground. They forage on the ground, feeding on trepang, insects, and other plants, but they are unable to digest the harder seeds as other grouse do.
The sage grouse builds its nest under a tree or in a haystack. Famous for its complex courtship rituals. Each spring, male birds gather at the lekking ground, two balloon-like bags with red necks, upright tail feathers and bulging chests, strutting to show off to females. The female observes and then chooses the most attractive male to mate with. Only a few males have the chance to mate. Male birds perform this ritual in the early morning and dusk of spring, lasting several hours at a time. The ceremony is usually performed in a nearby clearing with a dense tristidon bush, and the same spot can sometimes be used for decades. The laying period is from July to August. It takes ten days to select a partner. The female builds a shallow nest in the ground and simply trims it, usually under sagebrush, with a little grass bedding. Once the nest is established, the female begins laying eggs. The incubation period is usually 25 to 27 days.
The sage grouse population has decreased due to habitat loss; They have become regionally extinct in British Columbia in Canada and Kansas, Nebraska, Oklahoma, Arizona and New Mexico in the United States. Although it is not listed as endangered by the IUCN as a whole, populations in various regions are.
Listed on the International Union for Conservation of Nature (IUCN) 2012 Red List of Threatened Species ver3.1 - Near Threatened (NT).
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