The red-billed Streamertail hummingbird or swallow tail humming bird is Jamaica's National Bird, and is one of the most outstanding of the 320 species of hummingbirds. It lives only in Jamaica. These birds’ beautiful feathers have no counterpart in the entire bird population and they produce iridescent colours characterstic only of that family. In addition to these beautiful feathers, the mature male has tow long tails which stream behind him when he flies. 

The streamertail has the plummage of long tail feathers crossing in resemblance to the old-fashioned coattails of a doctor; hence, Jamaicans call it the "Doctor bird."