430. COSTA'S HUMMINGBIRD. _Calypte costæ._ Range.--Southwestern United States; north to southern Utah; winters south of our border. Smaller than the last and with both the crown and the throat gorget, violet or amethyst, the feathers on the sides of the latter being lengthened. Their nests are situated in the forks of branches generally near the ground, and seldom above six feet from it. They are made of plant down with shreds of weeds, bark and lichens worked into the outside portions, and are often lined with soft feathers. The two eggs average .48 × .32. Data.--Arroyo Seco, California, June 10, 1900. Nest in an alder bush. Collector, Charles E. Groesbeck. 431. ANNA'S HUMMINGBIRD. _Calypte anna_. Range.--Pacific coast of the United States from northern California, southward, wintering in Mexico and southern California. This handsome species has both the crown and the broadened and lengthened throat gorgets, a purplish pink; it is slightly larger than the Ruby-throat. They are very abundant in their restricted range, and nest in February and March and again in April or May, raising two broods a season. Their nests are made of plant down and covered on the outside with cobwebs and a few lichens, and are generally located at a low elevation. The white eggs average .50 × .30. Data.--Santa Monica, California, March 4, 1897. Nest in a bunch of seed pods in a gum tree, ten feet from the ground. Collector, Tom Bundy. [Illustration 277: 430--431.] [Illustration.] [Illustration: right hand margin.] Page 276 432. BROAD-TAILED HUMMINGBIRD. _Selasphorus platycercus._ Range.--Rocky Mountain regions, north to Wyoming; winters south of the United States. This species is similar to the Ruby-throat, but larger and with the back more golden green color, and the throat shining lilac. They are very abundant in Colorado and Arizona, nesting as do the Ruby-throats in the east, and their nests being similar in construction and appearance to those of that species. The eggs cannot be distinguished from those of other species. 433. RUFOUS HUMMINGBIRD. _Selasphorus rufus._ Range.--Western North America, breeding from the Mexican border north to Alaska and fairly abundant in most of its range. A handsome little species with the back and tail reddish brown, and with a throat gorget of orange red, the feathers being slightly lengthened into a ruff on the side of the gorget. They nest in a great variety of locations and at a low elevation, such as vines, bushes and the low hanging branches of trees. The nest is made of vegetable fibres covered with cobwebs and often with lichens. The eggs do not differ from those of the other Hummers. [Illustration 278: 432--433--434.] [Illustration:.] [Illustration: left hand margin.] Page 277 434. ALLEN'S HUMMINGBIRD. _Selasphorus alleni._ Range.--Pacific coast from British Columbia southward; most abundant in California. Winters in Mexico.