About Vireo bairdi Ridgway, 1885
The Cozumel vireo, with the scientific name Vireo bairdi Ridgway, 1885, measures 11.5 to 12.5 cm (4.5 to 4.9 in) in length and weighs approximately 11 to 14.5 g (0.39 to 0.51 oz). Males and females have identical plumage. Adults have dark chestnut-brown crowns, napes, and ear coverts. An off-white patch extends from the lores to the eye, and a wide white eye-ring completes a pattern that resembles spectacles. The species' upperparts are light chestnut-brown. Its wing coverts are gray-brown with wide yellowish-white tips that form two distinct bold wing bars. Flight feathers are gray-brown; the primaries and secondaries have greenish or olive-yellow edges along their outer webs, while the tertials have whitish edges. The tail is brownish gray, with greenish edges on the outer webs of its feathers. The chin and throat are off-white, the breast is off-white with chestnut- or cinnamon-brown sides, the flanks are brownish, and the belly and vent are off-white. Adults have a brown iris, a pinkish bill with a darker tip, and legs and feet that are lead-blue, bluish pink, or dusky pinkish. Juveniles are paler overall than adults, with purer brown breast sides and a darker brown iris.
The Cozumel vireo is found exclusively on Cozumel Island, which lies off the coast of the Mexican state of Quintana Roo on the eastern Yucatán Peninsula. It lives in scrubby woodlands and similar habitats, including brushy abandoned fields, young secondary woodland, and thickets within more mature woodland.
