Icterus baltimore (II, 195). Extends its range westward to the Rocky Mountains. Collected in El Paso County, Colorado, by Mr. Aiken.
Icterus bullockii (II, 199). Extends eastward to Eastern Kansas, where it is not uncommon. (See Snow’s Catalogue of the Birds of Kansas, 1873.)
Corvus cryptoleucus (II, 242). According to Mr. Aiken this species is abundant, and nearly replaces C. carnivorus along the eastern base of the Rocky Mountains, as far north as Cheyenne.
Captain Bendire found this a resident species in Southern Arizona, and met with two nests at the base of the St. Catharine Mountains, near Tucson. One of these contained three, the other four eggs. These he described as very light colored, so pale that if mixed with hundreds of others of this family they could be picked out without difficulty. Their ground-color is said to be a very pale green, with darker markings running more into lines than spots; in fact, very few spots were found on either set. The size of the largest was 1.85 inches by 1.33, that of the largest 1.70 by 1.19. They were not common in the vicinity of Tucson.
Cyanura (II, 271). For a special treatment of the races of C. stelleri, see Am. Journ. Science and Arts, January, 1873.
Cyanocitta californica (II, 298). Dr. Cooper has ascertained that this species does occur on the eastern slope of the Sierra Nevada, but lower down than the region he visited in 1863. He found a few at Verdi, close to the eastern boundary-line of California, at about 4,500 feet elevation, in July, 1870. He saw none elsewhere.
Tyrannus vociferans (II, 327). Captain Bendire writes that this species arrives in the neighborhood of Tucson about the middle of April, but does not commence nesting until the middle of June. All the nests he found were difficult to get at, being generally placed on a branch of a large cottonwood-tree, and at a distance from the trunk. The nest is described as very large for the size of the bird, composed of sticks, weeds, dry grasses, and lined with hair, wool, and the inner soft fibres of bark of the cottonwood. The usual complement of eggs is three, seldom four. They measure from 1.00 by .75 to 1.10 by .80 of an inch, are of a creamy-white color, with large isolated spots of a reddish-brown, scattered principally about the larger end.
Myiarchus (II, 329). For a discussion of the races of M. lawrencii considered in their relation to climatic color-variation, see Am. Journ. Science and Arts, December, 1872.
Sayornis (II, 339). The outlines of species of Sayornis given below are additional to those already published.
Empidonax brunneus (II, 363). Specimens in the collection of the Boston Society bear the MSS. name of E. olivus. But we cannot find a reference to this name.