Unfortunately, little information exists on this small Panamanian endemic. Classified as vulnerable due to its limited range, the Glow-throated Hummingbird is restricted to west central Panama and has been cited at only a few locations including the Serranía de Tabasará and potentially in the highlands of the Península de Azuero. During the 20th century, this species was only recorded in two areas: Cerro Colorado/Cerro Flores and Santa Fé/Cerro Tute. Although not officially documented, forest fragmentation in Serranía de Tabasará and elsewhere is suspected to be contributing to a decline in the population.
Little information about the bird’s basic biology exists other than it inhabits forest borders and clearings between 750-1800 meters. Males are bronze and green with a pinkish-red gorget bordered by a white collar on the front of the neck. Both sexes could possibly be confused with the Scintillant Hummingbird (Selasphorus sctintilla) but the Glow-throated exhibits a mostly black tail where the Scintillant Hummingbird’s is rufous with some black striping. The female Glow-throated is brighter below and has less rufous edging on the tail than does the Scintillant. Both sexes have short, black bills.