Found in Ecuador and Peru, the amazilia hummingbird (Amazilia amazilia) is a green-and-chestnut hummingbird with plumage that varies throughout its range - but all have a red bill with a black tip. It is the only species placed in the genus Amazilis. The amazilia frequents open, scrubby, arid areas with thorn forests and desert habitat.
The sub-species are:
• Amazilia amazilia alticola has less rufous on the breast than the nominate and almost no green on the tail.
• Amazilia amazilia azuay differs the most from the nominate. Its bill has less red on the maxilla, it has a nearly pure white belly with rufous only on the lower flanks, and its uppertail coverts and tail are paler rufous with little green.
•Amazilia amazilia dumerilii is somewhat smaller than the nominate, with a white chin, throat, and center of the belly.
• Amazilia amazilia leucophoea looks almost the same as demerillii but has bronze-green upperparts.
• Amazilia amazilia caeruleigularis has a glittering violet-blue throat instead of the nominate's green.
