The Black-chinned Hummingbird is the most common hummingbird in the western half of the United States.
Map courtesy of Patuxent Wildlife Research Center, United States Department of the Interior, Laurel, MD. From THE NORTH AMERICAN BREEDING BIRD SURVEY RESULTS AND ANALYSIS, Version 96.3 by J. R. Sauer, J.E. Hines, G. Gough, I. Thomas, B.J. Peterjohn.