The reddish hermit (Phaethornis ruber) is a species of bird in the Trochilidae family, the hummingbirds. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, Venezuela, and in the Guianas. At 7.5 cm (3 in) and a weight under 3 grams, it is among the smallest of the hermits and smallest birds overall. Its natural habitats are forest and woodland, primarily humid.