Mouse-colored tyrannulet

The mouse-colored tyrannulet ("Phaeomyias murina") is a species of bird in the tyrant flycatcher family Tyrannidae. It occurs in a wide range of scrubby and wooded habitats in tropical and subtropical South America, being absent from the southernmost part of the continent, the high Andes and dense rainforest. It also occurs in Panama and Costa Rica. It is generally common, but its small size and dull plumage results in it often being overlooked – or at least not identified, as it resembles several other tyrant flycatchers.
Four subspecies are recognised:
The mouse-colored tyrannulet was formerly considered conspecific with the Tumbesian tyrannulet ("Phaeomyias tumbezana") that occurs west of the Andes in southwest Ecuador and northwest Peru. The two species are visually very similar, but vocally distinct.