NORTHERN VIOLET-GREEN SWALLOW.
615. Tachycineta thalassina lepida. 5¼ inches.
In the Rocky Mountain regions of the United States and west to the Pacific, breeding throughout its range. A most beautiful species with its blue, green and purple back and white under parts. They are abundant in favorable localities in California, building their nests in holes of trees, at times well up in the mountains, in the tops of some of the largest redwoods and pines, using woodpecker holes, and at times placing their nest in a crevice of the cliffs. Their nests are made of grass and fine roots, and nicely lined with feathers. Their four to six eggs are pure white (.72 × .50).