The Greater Sage-grouse (Centrocercus urophasianus) is an impressive 6 pounds and the largest North American grouse.
They are brown, buff, and white with a long, pointy tail and black belly.
Sage-grouse are best known for their incredible courtship displays. A displaying male sage-grouse is an impressive sight as he fans his tail and drags his wings along his rough neck feathers while inflating his yellow air sacs. The whole display sounds like a series of swishes, hoots, and pops.
Breeding sage-grouse use an area called a “lek” for their courtship displays. This is a small, open area where a group of males gather annually to display for the hens. Biologists keep track of populations by recording the number of sage-grouse using a lek.