Tail pheasant-like of twenty feathers. Males with an inflatable air-sac on each side of neck. One species.
C. urophasianus. Male 28" ; weight 8 lbs. Female 22"; weight 5 lbs. Above blackish, mottled buff. Breast and belly mostly black. Chin and throat white, spotted black.— Female : Chin and throat white. Plains of Rocky Mountain Plateau. Pairing begins in March. Males remain apart till young are grown up. Seven to nine eggs (2.2 x 1.5), olive-buff, spotted chocolate.