Chocó vireo

The Choco vireo (Vireo masteri) is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found in Colombia and Ecuador.

The Choco vireo is about 12.5 cm (4.9 in) long and weighs about 11 to 11.5 g (0.39 to 0.41 oz). The sexes have the same plumage. Adults have an olive crown, a yellow buff to dingy yellowish supercilium, white arcs above and below the eye, a dusky stripe from the lores through the eye, and yellow-buff ear coverts. Their nape and upperparts are olive that becomes brighter by the rump. Their wing coverts are dusky gray with wide white tips that show as two wing bars. Their primaries and secondaries are dark brown with thin yellow-green or white edges. Their central pair of rectrices are olive and the rest dark brown; the outer three pairs have pale dingy white to pale brown edges. Their throat is yellow-tinged whitish, their breast buff yellow, their belly dingy white with olive sides, and their undertail coverts straw yellow. They have a dark brown iris, a blackish maxilla, a pale dusky mandible with a paler base, and bluish gray legs and feet. Juveniles have a paler supercilium, more yellow-tinged wing bars, and paler, more creamy, underparts than adults.