Coopmans's Elaenia

Coopmans's elaenia is about 13.5 cm (5.3 in) long. It is a small elaenia with a small squarish crest. The sexes have the same plumage. Adults have a brownish olive head with lighter cheeks, a thin whitish eyering, and a mostly hidden white patch on the crown. Their upperparts are brownish olive. Their wings are mostly dusky with whitish edges on the flight feathers. The tips of their wing coverts are white and show as two wide bars on the closed wing. Their tail is dusky. Their throat is gray, their breast gray-olive, and their belly and undertail coverts pale yellow. Both sexes have a dark brown iris, a black bill with a pinkish base to the mandible, and black legs and feet.

Coopmans's elaenia has a disjunct distribution. On population is found from Nariño Department in far southwestern Colombia south into Ecuador as far as northern Pichincha Province. The other is found on the east side of the Ecuadoran Andes at a few locations in Napo and Morona-Santiago provinces. There is speculation that this population's range extends north into southern Colombia and south into northeastern Peru. The species inhabits a variety of semi-open landscapes such as light woodlands and clearings and edges in thicker forest. In elevation it ranges between 700 and 2,800 m (2,300 and 9,200 ft) in the northwest and between about 900 and 1,900 m (3,000 and 6,200 ft) east of the Andes.

The diet and foraging behavior of Coopmans's elaenia are not known. They are probably similar to those of its former "parent" the lesser elaenia, which see here.