Dr. Heermann found this Blackbird very common in New Mexico and Texas, though he was probably in error in supposing that all leave there before the period of incubation. During the fall they frequent the cattle-yards, where they obtain abundance of food. They were very familiar, alighting on the house-tops, and apparently having no cause for fear of man. Unlike all other writers, he speaks of its song as a soft, clear whistle. When congregated in spring on the trees, they keep up a continual chattering for hours, as though revelling in an exuberance of spirits. Under the common Spanish name of _Pajaro prieto_, Dr. Berlandier refers in MSS. to this species. It is said to inhabit the greater part of Mexico, and especially the Eastern States. It moves in flocks in company with the other Blackbirds. It is said to construct a well-made nest about the end of April, of blades of grass, lining it with horse-hair. The eggs, three or four in number, are much smaller than those of _Quiscalus macrurus_, obtuse at one end, and slightly pointed at the other. The ground-color is a pale gray, with a bluish tint, and although less streaked, bears a great resemblance to those of the larger Blackbird. Dr. Cooper states that these birds nest in low trees, often several in one tree. He describes the nest as large, constructed externally of a rough frame of twigs, with a thick layer of mud, lined with fine rootlets and grasses. The eggs are laid from April 10 to May 20, are four or five in number, have a dull greenish-white ground, with numerous streaks and small blotches of dark brown. He gives their measurement at one inch by .72. They raise two and probably three broods in a season. Four eggs of this species, from Monterey, collected by Dr. Canfield, have an average measurement of 1.02 inches by .74. Their ground-color is a pale white with a greenish tinge. They are marked with great irregularity, with blotches of a light brown, with fewer blotches of a much darker shade, and a few dots of the same. In one egg the spots are altogether of the lighter shade, and are so numerous and confluent as to conceal the ground-color. In the other they are more scattered, but the lines and marbling of irregularly shaped and narrow zigzag marking are absent in nearly all the eggs. Mr. Lord found this species a rare bird in British Columbia. He saw a few on Vancouver Island in the yards where cattle were fed, and a small number frequented the mule-camp on the Sumas prairie. East of the Cascades he met none except at Colville, where a small flock had wintered in a settler’s cow-yard. They appeared to have a great liking for the presence of those animals, arising from their finding more food and insects there than elsewhere, walking between their legs, and even perching upon their backs. Captain Blakiston found this species breeding on the forks of the Saskatchewan, June 3, 1858, where he obtained its eggs. GENUS QUISCALUS, VIEILLOT.