- Order: Passeriformes
- Family: Tyrannidae
The Peruvian Tyrannulet is a small flycatcher of montane northwestern South America. The species inhabits upper levels of montane forest in the Andes of Peru and Ecuador between 1000 and 2500 meters in elevation. It is olive above with dusky wings edged in yellow, a gray crown, dark ocular stripe, whitish-yellow supercilium, and whitish yellow underparts with a dusky chest. Peruvian Tyrannulet used to be considered conspecific with Golden-faced Tyrannulet, but that species has a yellower face and whiter underparts.
Johnson, Tom. 2010. Peruvian Tyrannulet (Zimmerius viridiflavus), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology; retrieved from Neotropical Birds Online: http://neotropical.birds.cornell.edu/portal/species/overview?p_p_spp=437481