of Threatened Species. It is listed on Appendix III of CITES in Costa Rica, Guatemala, Colombia and Honduras. 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. In Mexico, there are Unidades de Manejo para la Conservación de la Vida Silvestre [Management Units for the Conservation of Wildlife] (UMAs) who are breeding great curassows in captivity. References External links Great curassow stamps from British Honduras (now Belize), El Salvador, Honduras, and Mexico at www.bird-stamps.org Great curassow female photo at tropicalhardwoods.com great curassow great curassow Birds of Central America Birds of the Yucatán Peninsula Birds of Mexico Birds of Colombia Birds of Ecuador great curassow great curassow Birds of the Sierra Madre Oriental