White-winged Warbler

The white-winged warbler is 13 to 14 cm (5.1 to 5.5 in) and weighs 12 to 13 g (0.42 to 0.46 oz). The sexes are alike and not particularly dimorphous. Adults have a gray head and neck, a white stripe from the beak to the eye above black lores, and white arcs above and below the eye. The back and rump is olive and the tail an almost-black dark gray with white spots on the tips of the outer feathers. The wings are also very dark gray with white on the primaries that shows as a white patch on the closed wing. The underparts are white-washed with gray on the breast and flanks. Voice: As of late 2022, xeno-canto had only two recordings of white-winged warbler vocalization; the Cornell Lab of Ornithology's Macaulay Library had several more. The species' song is "a series of high-pitched, squeaky notes that accelerate at the end". It also makes "a low-pitched tseep" and "a low-pitched chattering suit..suit..suit..chir..suit..suit..suit..suit..chir..chi" calls.