Mangrove Vireo

The mangrove vireo is 11 to 12 cm (4.3 to 4.7 in) long and weighs about 9 to 13 g (0.32 to 0.46 oz). The sexes have the same plumage. Adults of the nominate subspecies V. p. pallens have a mostly greenish brown crown, face, and nape with a buffy area from above the lores to past the eye. Their upperparts are greenish brown. Their wing coverts are dark gray with yellowish white tips that form two wing bars. Their flight feathers are dark gray; the primaries and secondaries have thin yellowish green edges on the outer webs and the tertials have whitish edges. Voice: The mangrove vireo's vocalizations vary among the subspecies. In Mexico it sings "a series of 3–12 (usually 4–6) twanging, slightly disyllabic notes". In northern Central America different populations sing jear-jear-jear-jear-jear and wei-wei-wei-wei-wei. In Costa Rica the species sings "a scratchy, monotone chi-chi-chi-chi-chi-chi-chi".