Tapajos Hermit

The Tapajós hermit (Phaethornis aethopygus) is a species of hummingbird in the family Trochilidae. It is endemic to Brazil. == Taxonomy and systematics == The Tapajós hermit was first described in 1950 as a subspecies of the little hermit (P. longuemareus). At that time many small hermits now treated as separate species were considered subspecies of the little hermit, and the Tapajós hermit was believed to be most closely related to the black-throated hermit (P. atrimentalis). In 1996 it was suggested that the Tapajós hermit was entirely invalid, and actually represented a hybrid between the reddish (P. ruber) and streak-throated (P. rupurumii) hermits. In 2009 this hypothesis was shown to be incorrect, and the Tapajós hermit was recognized as a valid species. The Tapajós hermit is monotypic. == Description == The Tapajós hermit is about 9 cm (3.5 in) long. The male has a metallic olive green crown and back with reddish edges to the feathers and a rich reddish rump. The tail is rounded; the feathers are dusky brownish with reddish shafts and all but the outermost have white at their base. The face is blackish with a pale supercilium and a reddish malar stripe. The chin is white…