Range. - Western United States from the Rocky Mountain region to California, and from Wyoming southward.

This species is like the last except that the throat and breast are darker. Their habits, nesting habits and eggs are indistinguishable from those of the other Tyrant Flycatchers, and they are fully as courageous in the defense of their homes against either man or bird, their notes resembling those of the common Kingbird of the east.

448 Cassin s Kingbird Tyrannus Vocifcrans 874