About Tolmomyias flaviventris viridiceps (P.L.Sclater & Salvin, 1873)
The ochre-lored flatbill measures about 12 to 13 cm (4.7 to 5.1 in) in length and weighs 9 to 17.5 g (0.32 to 0.62 oz). Males and females have identical plumage. For the nominate subspecies, adults have a yellowish olive head, with a brighter ochre-tinged stripe above the lores and a brighter ochre-tinged eye-ring. Their back, rump, and uppertail coverts are also yellowish olive. Their wings are dusky, with yellowish edges on the coverts and remiges that form two visible wing bars; their tail is dusky. Their underparts are bright yellow, with an olive to ochre wash covering the throat, breast, and lightly the belly. Subspecies T. f. aurulentus is darker overall than the nominate and has richer yellow underparts. Subspecies T. f. dissors is slightly smaller than the nominate but matches it in all other features. All subspecies have a brown or red-brown iris, a wide flat dark gray or black bill that sometimes has a pinkish base to the mandible, and blue-gray or black legs and feet. The ochre-lored flatbill’s distribution spans from eastern Panama to Bolivia and southern Brazil. Subspecies T. f. aurulentus is the northernmost taxon; it occurs from eastern Panama east through northern and eastern Colombia, in northern and central Venezuela from Zulia south into Bolívar, across the Guianas, in northern Brazil north of the Amazon from the Branco River to the Atlantic coast in Amapá and northern Pará, and on the islands of Trinidad and Tobago. As of 2009, this subspecies was only recorded near El Real in extreme eastern Darién Province, Panama. Subspecies T. f. dissors is found from northwestern Bolívar and Amazonas states in southern Venezuela, extending south and east into Brazil between the Tapajós River and the Tocantins River. The nominate subspecies occurs in eastern Brazil south of the Amazon, from Maranhão south to Mato Grosso and along the coast to Rio de Janeiro, and extends into the Santa Cruz Department of eastern Bolivia. The ochre-lored flatbill lives in a wide range of landscapes, including dry to humid forest and woodlands, gallery forest, restinga, and caatinga. In the Amazon Basin, it is mostly found along waterways, often at the edge of várzea. It occurs less commonly in terra firme and savanna woodland, though it is found more often in savanna in Venezuela than in other regions. It inhabits mangroves on Trinidad and in the Guianas. Its maximum elevation reaches 800 m (2,600 ft) in Colombia, 900 m (3,000 ft) in Venezuela, and 1,000 m (3,300 ft) in Brazil.
