Golden-tailed starfrontlet

The golden-bellied starfrontlet and most other members of genus Coeligena were at one time placed in genus Helianthea but have been in their current placement since the mid-1900s.[6] The International Ornithological Committee (IOC), the Clements taxonomy, and BirdLife International's Handbook of the Birds of the World recognize the golden-tailed starfrontlet as a monotypic species, though each gives it a different English name.[3][5][4] The South American Classification Committee of the American Ornithological Society (SACC) considers it to be a subspecies of the golden-bellied starfrontlet (C. bonapartei) but is seeking a proposal to elevate it to species status.[6]

The golden-tailed starfrontlet is about 11.4 cm (4.5 in) long including its 3.0 cm (1.2 in) bill. Males weigh about of 6.8 g (0.24 oz) and females 6.4 g (0.23 oz). Both sexes have a white spot behind the eye. Adult males have a blackish crown with a glittering green forehead. Their upper back is shining golden green that transitions to the gold to golden orange rump. The throat and breast are glittering green and the throat has a small violet patch. The rest of the underparts are variable, from glittering coppery red to reddish gold. The undertail coverts are light cinnamon. The wings are dark with a rufous patch on the tertials. The slightly forked tail is rufous or cinnamon tipped with golden bronze. The adult female's forehead is plain green; the rest of the upperparts are colored like the male's but are duller. The throat is plain cinnamon buff and has green spots on its sides. The breast is mottled buff and green. The rest of the underparts are mostly cinnamon with a fiery gold belly and a coppery gold vent area.[7]

The golden-tailed starfrontlet is found in the Andes of western Venezuela between the states of Lara and Táchira. It primarily inhabits the interior and edges of humid montane forest. It also occurs in dwarf forest and more open landscapes with scattered vegetation. In elevation it ranges from 1,400 to 3,200 m (4,600 to 10,500 ft).[7]

The IUCN has assessed the golden-tailed starfrontlet as being of Least Concern. It has a small range and an unknown population size that is believed to be decreasing. No immediate threats have been identified.[1] Its "distribution coincides with areas of new human settlements and areas of interest for minerals exploitation."[7]