Western United States, breeding from Central California to Texas and the borders of Mexico. Their breeding habits are the same and the eggs are not distinguishable from the others, all of them varying in the markings, but practically of the same size and general color.
WESTERN MARTIN.
611a. Progne subis hesperia. 8½ inches.
The male of this is not to be distinguished from the eastern Purple Martin, and in the female a lighter gray on the forehead is the only difference. They nest in cavities of trees or in boxes provided for them in the cities and towns, both in the east and west, as they are to be found breeding throughout the United States and into British Columbia. They make their nests of twigs, roots and mud, usually lined with feathers, and lay from four to six white eggs (.95 × .65).
CLIFF SWALLOW.
612. Petrochelidon lunifrons. 5½ inches.
Their range is throughout the whole of North America; they can easily be recognized by their brownish throat and breast, white forehead and black cap. Their nests or homes are built of mud, securely cemented to the face of cliffs, or under the eaves of buildings. They make them round or gourd-shaped, with a small opening in the side, and lining the inside with grass and feathers. They lay four eggs, creamy white, spotted with shades of brown (.80 × .55).
