Black-throated Gray Warblers (Dendroica nigrescens) are common spring and summer residents in oak-pine woodlands throughout Arizona, and where I live in the southeastern part of the state, they are found in the mountains, especially in places like Madera Canyon. This particular male Black-throated Gray Warbler was summering in the northern part of Arizona near the Grand Canyon.
Black-throated Gray Warblers are mostly black-streaked gray above and white below. A male Black-throated Gray Warbler has a black throat and mostly black head with white stripes over and under the eyes. A female Black-throated Gray Warbler has a white throat, a grayer head, and a white stripe over the eyes. The best way to distinguish Black-throated Gray Warblers from other similar black and white warblers is by the presence of their distinctive yellow spot between the eye and bill, which none of the other similar warblers have.