Emerald

Emeralds, Cynanthus is a genus of hummingbird in the family Trochilidae. A single species, the Blue-chinned Sapphire is variously placed in the monotypic genus Chlorestes or in Chlorostilbon. The taxonomy of the C. mellisugus superspecies is highly complex and, depending on view, includes 1-8 species. All species in this genus have straight black or black-and-red bills. The males are overall iridescent green, golden-green or bluish-green, and in some species the tail and/or throat is blue. The females have whitish-grey underparts, tail-corners and post-ocular streak.

Species

 * Dusky Hummingbird, Cynanthus sordidus
 * Blue-headed Hummingbird, Cynanthus bicolor
 * †Brace's Emerald, Cynanthus bracei
 * Cuban Emerald, Cynanthus ricordii
 * †Gould's Emerald/Caribbean Emerald, Cynanthus elegans
 * Hispaniolan Emerald, Cynanthus swainsonii
 * Puerto Rican Emerald, Cynanthus maugaeus
 * Coppery Emerald, Cynanthus russatus
 * Broad-billed Hummingbird, Cynanthus latirostris
 * Doubleday's Hummingbird, Cynanthus doubledayi
 * Golden-crowned Emerald, Cynanthus auriceps
 * Cozumel Emerald, Cynanthus forficatus
 * Canivet's Emerald, Cynanthus canivetii
 * Garden Emerald, Cynanthus assimilis
 * Western Emerald/West Andean Emerald, Cynanthus melanorhynchus
 * Green-tailed Emerald, Cynanthus alice
 * Narrow-tailed Emerald, Cynanthus stenurus
 * Short-tailed Emerald, Cynanthus poortmani
 * Glittering-bellied Emerald, Cynanthus lucidus
 * Blue-tailed Emerald, Cynanthus mellisugus
 * Red-billed Emerald, Cynanthus gibsoni
 * Chiribiquete Emerald, Cynanthus olivaresi