Clacking it's beak together to make the loud thundering noise. Like a Clunk.
It is a male Eurasian Capercaillie (grouse) bird
Capercaille
Capercaillie - band - was created in 1984.
Crosswinds - Capercaillie album - was created in 1987.
Capercaillie Live in Concert was created in 2002.
Black-billed Capercaillie was created in 1856.
Delirium - Capercaillie album - was created in 1991.
A black-billed capercaillie is a large black grouse endemic to Siberia, closely related to the western capercaillie - Latin name Tetrao parvirostris.
Tetrao urogallus. . .also known as the Wood Grouse, Heather Cock, or in Scott's Gaelic: Coileach-Fraoich
Strophic form (verse verse structure). Not to be confused with verse-chorus form, which is just that. Capercaillie is the only strophic song
lemurs comunicate by many different high piched sqweks
See more informations at http://en.wikipedia.org/wiki/Capercaillie.