This species has one of the smallest and hardest to reach breeding ranges of any warbler that nests in the U.S.!

The Colima Warbler is primarily a Mexican species, and its breeding range in the U.S. is limited to the Chisos Mountains in Big Bend National Park, Texas. A 10-mile round trip hike into the mountains in the late spring or summer is required to reliably see this species in the U.S.

Colima Warblers sing and forage in trees, especially oaks, but they nest on the ground, usually under some kind of protective cover such as rocks or vegetation.