Rufous-caped warbler

This is a New World warbler native from Mexico south to much of Central America, rarely but sometimes seen in Arizona and south Texas.
Rufous-capped Warblers generally reach a length of about 12.7 cm (5 inches). They are plain-olive to olive-gray, with white underbellies, bright yellow chests and throats, and a distinctive facial pattern consisting of a rufous cap, a white superciliary, a dark eye-line fading into a rufous cheek, and a white malar marking. The bill is rather stout for a warbler, the wings are round and stubby, and the tail is long, often raised at a high angle and flicked.