About Vireo atricapilla Woodhouse, 1852
Description: The black-capped vireo (Vireo atricapilla Woodhouse, 1852) is a songbird that reaches approximately 12 cm (4.5 inches) in length. Sexually mature mature males are olive green on their upper bodies, white on their underbodies, and have faint yellow flanks. Their crown and the upper half of their head are black, with a partial white eye ring and lores. They have brownish-red irises and black bills. Females are duller in color than males, and have a slate-gray crown and greenish-yellow washed underparts. First-year males often have more extensive gray coloring in the cap, similar to adult females. Distribution: The historic breeding distribution of the black-capped vireo extended south from south-central Kansas through central Oklahoma and Texas to central Coahuila, Mexico. At present, the breeding range extends from Oklahoma south through the Edwards Plateau and Big Bend National Park, Texas, to at least the Sierra Madera in central Coahuila, and further south to southwestern Tamaulipas. In Oklahoma, the black-capped vireo is found only in Blaine, Cleveland, Cotton and Comanche Counties. It winters along the west coast of Mexico from southern Sonora to Guerrero.
