Mosquitero oscuro Phylloscopus umbrovirens

Small brownish warbler. Dull greenish on the back and buffy brown below. The bright yellow-green edges to the wing feathers can be conspicuous. Found in montane forest, mostly in the mid-story and canopy. Like other woodland-warblers, active and always on the move. The distinctive song consists of quick up-and-down series which are repeated with slight variations after a short pause. Similar to Red-faced Woodland-Warbler, but darker on the belly, with less red on the face and throat.