The olive-streaked flycatcher (Mionectes olivaceus) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Costa Rica and Panama.
Taxonomy and systematics
The four subspecies of what is now the olive-striped flycatcher (Mionnectes galbinus) were previously treated as subspecies of what is now the olive-streaked flycatcher. (Confusingly, the original unsplit species was called the olive-striped flycatcher but bore the present olive-streaked flycatcher's binomial Mionectes olivaceus.) Based primarily on vocal differences the species were separated by taxonomic systems beginning in 2016, leaving the olive-streaked flycatcher as a monotypic species. However, as of late 2024, the North American and South American Classification Committees of the American Ornithological Society have not agreed to the split. They retain the olive-striped flycatcher/Mionectes olivaceus names.
This article follows the monotypic species model.
Description
The olive-streaked flycatcher is 13 cm (5.1 in) long. The sexes have the same plumage. Adults have a dark olive face with white streaks and a small triangular white spot behind the eye. Their crown and nape are dark olive and the rest of their upperparts are warm yellow green. Their wings and tail are dusky olive. Their throat and upper breast have dense dark olive and yellowish white streaking with thinner white streaks. Their lower breast and flanks are streaked with dark olive and yellow and their belly is unstreaked yellow. Both sexes have a dark brown iris, a dark brownish gray or black bill with usually a paler base to the mandible, and dark gray or pinkish legs and feet.
Distribution and habitat
The olive-streaked flycatcher is found through much of the highlands of Costa Rica and into western Panama. It inhabits the interior and edges of humid to wet forest, secondary forest, and plantations in the lower subtropical zone. It favors areas with dense shady and moist undergrowth such as is found in ravines. In Costa Rica it mostly...
