This hummingbird occurs on Tobago and nearby areas. Males have a blue throat, while females are grayer, and both have conspicuous long white tail feathers. It hovers at flowers to take nectar and small insects.
The male has a deep blue throat, while the female's throat is grayish. Both have long white tail feathers that are conspicuous in flight.
It hovers at flowers for nectar and also takes small insects. On Tobago, it has been recorded in montane forest, along forest edges, at abandoned coffee plantations, and in young regenerating woodland.
An extinction-risk assessment has not been added yet.