 Of the smaller subspecies "C. r. griscomi" of Cozumel Island, only a few hundred remain.Its population seems either to have been slowly increasing since the 1980s, or to be fluctuating at a low level; it is vulnerable to hurricanes.This species has proven to produce fertile hybrids with its closest living relative, the blue-billed curassow, and also with the much more distantly related black curassow.