Mexican ChickadeePoecile sclateri
The southernmost of the chickadees, this bird is common in mountain forests over much of Mexico. It barely enters our area, crossing the border only to the Chiricahua Mountains of Arizona and the Animas Mountains of New Mexico. Most birders encounter it in the Chiricahuas, where it ranges through the Douglas-firs at high elevations. In late summer, after nesting, Mexican Chickadees join mixed flocks with various warblers and other birds.