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Male grouse tend to be larger than female grouse, [9] which seems to hold true across all the species of grouse, with some difference within each species in terms of how drastic the size difference is. [9] The hypothesis with the most supporting evidence for the evolution of sexual dimorphism in grouse is sexual selection. [9]
A male found at the Kortright Center for Conservation. The ruffed grouse (Bonasa umbellus) is a medium-sized grouse occurring in forests from the Appalachian Mountains across Canada to Alaska. It is the most widely distributed game bird in North America. [2] It is non-migratory. It is the only species in the genus Bonasa.
A lekking species is characterised by male displays, strong female mate choice, and the conferring of indirect benefits to males and reduced costs to females. Although most prevalent among birds such as black grouse , lekking is also found in a wide range of vertebrates including some bony fish , amphibians , reptiles , mammals , and arthropods ...
Regenerated logged or burned areas also attract the sooty grouse as long as there are plenty of bushes and shrubs to nest in. The nest is a scrape on the ground concealed under a shrub or log. Grouse mountain, a mountain that acts as the peak of Vancouver, Canada gets its name from the infamous blue grouse that lives on the mountain. The first ...
The greater sage-grouse (Centrocercus urophasianus), also known as the sagehen, is the largest grouse in North America. Its range is sagebrush country in the western United States and southern Alberta and Saskatchewan, Canada. It was known as simply the sage grouse until the Gunnison sage-grouse was recognized as a separate species in 2000. [4]
As with many gamebirds, the cock (male) is larger than the hen (female), measuring 50–55 cm compared to her length of 37–42 cm. The cock is very distinctive, with all-black plumage, apart from red eyebrows, and a long, deeply forked tail. The female Caucasian grouse is grey with dark barring, and has a cackling call. [2]
Female reindeer grow antlers that are significantly smaller than their male counterparts. Male reindeer grow antlers as long as 50 inches after multiple seasons of shedding. Females grow 20-inch ...
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 ...