Orange-eyed Flatbill

The orange-eyed flatbill is about 13.5 cm (5.3 in) long; one male weighed 11.5 g (0.41 oz). The sexes have the same plumage. Adults have a cinnamon forecrown with olive-gray tips on the feathers. They have an olive-gray crown, buff lores, a pale eye-ring, and cinnamon-buff ear coverts. Their nape, back, rump, and uppertail coverts are pale olive-green. Their wings are dusky with greenish yellow edges on the greater coverts that form two wing bars and thin olive-green edges on the flight feather edges, some of which also have a cream far outer edge. Their tail is dusky with olive-green outer webs on most of the feathers. Their throat and chin are whitish buff, their upper breast ochraceous buff with duller sides, their lower breast and flanks pale yellow, their belly bright yellow, and their undertail coverts cream. They have a pale orangish brown or yellowish mauve iris, a wide flat bill with a black maxilla and a pale pinkish brown mandible, and bluish gray legs and feet.

The orange-eyed flatbill is a bird of the far western Amazon Basin. It is found from Putumayo Department in southern Colombia south through eastern Ecuador into northern Peru's Amazonas and Loreto departments. In addition, there are sight records in extreme southeastern Colombia's Amazonas Department near the Amazon River and eBird records further north in Colombia. The species' range might extend further east into far western Brazil. It is known along the Napo River in Ecuador and north of the Amazon and its tributaries in Colombia. It apparently replaces the yellow-olive flatbill (T. sulphurescens) north of the Amazon. The species inhabits riverside forest, especially seasonally flooded várzea. In Peru it is also known locally on older river islands. It primarily occurs from the forest's mid-story to its canopy. In elevation it reaches 300 m (1,000 ft) in Colombia and Ecuador; its maximum elevation in Peru isn't known.

The orange-eyed flatbill primarily feeds on insects, though details are lacking. It typically forages singly or in pairs and regularly joins mixed-species feeding flocks. It usually captures prey with outward or upward sallies to snatch it from leaves.