Known on Cuba more evocatively as zunzún, Cuban Emerald is not in fact endemic to that country, but also is found on three islands of the Bahamas. Only one other hummingbird occurs in Cuba, the world famous Bee Hummingbird (Mellisuga helenae), which is considerably smaller, with a much shorter tail, among other distinguishing features, than the present species. On Cuba, this emerald is a very common and widespread resident, which is found in just about any well-vegetated habitat, including on several small offshore islands. The male is entirely dark green with a small white post-ocular spot and a forked tail, while the female is distinguished by her gray breast and belly. Cuban Emerald breeds year-round, building a tiny but deep cup-shaped nest, and laying two white eggs.