Plain-capped starthroat (Heliomaster constantii)

Heliomaster constantii is a species in the Heliomaster genus. It is commonly known as Plain-capped starthroat This name is unplaced name for the species in the family Trochilidae subfamily Trochilinae, tribe Lampornithini, . This species is found in western Mexico, (the Sierra Madre Occidentals), to southern Costa Rica.