Tepui Vireo

The tepui vireo is 12 cm (4.7 in) long and weighs 10 to 12.5 g (0.35 to 0.44 oz). The sexes have almost the same plumage. Adults have a buffy forehead and lores on an otherwise gray face. Their crown and nape are gray and their upperparts olive-green. Their wings are gray with thin paler gray edges on the outer webs of the primaries and secondaries. Their tail is deep gray with paler edges on the feathers' outer webs. Their chin and throat are white, their breast yellow with greenish yellow sides, their flanks greenish yellow, their belly dull white, and their vent white or yellow-tinged white. The yellow of the breast forms a band that in males is more sharply defined than in females. Both sexes have a gray or white iris, a dark brownish maxilla, a dusky pinkish mandible, and pinkish gray to pinkish legs and feet. Juveniles have a dark iris.

The tepui vireo is primarily a bird of the tepui region where southeastern Venezuela's Amazonas and Bolívar states, extreme northern Brazil, and western Guyana meet. In addition, it was discovered in 2005 on Tafelberg in central Suriname. It inhabits the interior and edges of humid and wet montane forest on the tepuis, where it ranges in elevation between 600 and 2,000 m (2,000 and 6,600 ft).

The tepui vireo's diet is not known in detail but is mostly insects. It forages energetically, within the forest in the subcanopy and canopy and lower on its edges. It often hangs upside-down to take prey from leaves. It frequently joins mixed-species feeding flocks.