San Benito Sparrow
544c. Passerculus r. sanctorum. 5½ inches.
Breeds on San Benito Islands, winters in southern Lower California. Nesting habits are identical (not illustrated).
Baird Sparrow
545. Ammodramus bairdi. 5¼ inches.
These sparrows breed abundantly in parts of the Dakotas on the plains, and winter in eastern Colorado, through Arizona to New Mexico. The tail-feathers of this species are much more pointed than on any of the preceding.
Nest.—This is placed on the ground in clumps of grass, and is made of fine dried grass. Usually four eggs are laid of a dull white, blotched and spotted with shades of brown and lilac (.80 ×.60).