The Green ThorntailDiscosura conversii is a small hummingbird that is a resident breeder from Costa Rica to western Ecuador. It occurs at middle elevations from 700–1400 m but may descend lower early in the wet season. In Costa Rica and Panama it is confined to the Caribbean slopes. Green Thorntail has mainly green upperparts, a white rump band and a blackish lower rump and tail. The 10 cm long male has the long wire-like tail that gives this species its name and green underparts. The 7.5 cm long female lacks the long tail and has blackish underparts with a green breast band. She has conspicuous white moustaches.
These were photographed at the La Paz Peace Lodge and Rancho Naturalista, Costa Rica.