Dr. Cooper states it to be an abundant species everywhere throughout California, except in the dense forests, and resident throughout the year. They frequent pastures and follow cattle in the manner of the _Molothrus_. They associate with the other Blackbirds, and are fond of feeding and bathing along the edges of streams. They have not much song, but the noise made by a large flock, as they sit sunning themselves in early spring, is said to be quite pleasing. In this chorus the Redwings frequently assist. At Santa Cruz he found them more familiar than elsewhere. They frequented the yards about houses and stables, building in the trees of the gardens, and collecting daily, after their hunger was satisfied, on the roofs or on neighboring trees, to sing, for an hour or two, their songs of thanks. He has seen a pair of these birds pursue and drive away a large hawk threatening some tame pigeons. This species has an extended distribution, having been met with by Mr. Kennicott as far north as Pembina, and being also abundant as far south as Northern Mexico. In the Boundary Survey specimens were procured at Eagle Pass and at Santa Rosalia, where Lieutenant Couch found them living about the ranches and the cattle-yards. Mr. Dresser, on his arrival at Matamoras, in July, noticed these birds in the streets of that town, in company with the Long-tailed Grakles _Q. macrurus_ and _Molothrus pecoris_. He was told by the Mexicans that they breed there, but it was too late to procure their eggs. In the winter vast flocks frequented the roads near by, as well as the streets of San Antonio and Eagle Pass. They were as tame as European Sparrows. Their note, when on the wing, was a low whistle. When congregated in trees, they kept up an incessant chattering. Dr. Coues found them permanent residents of Arizona, and exceedingly abundant. It was the typical Blackbird of Fort Whipple, though few probably breed in the immediate vicinity. Towards the end of September they become very numerous, and remain so until May, after which few are observed till the fall. They congregate in immense flocks about the corrals, and are tame and familiar. Their note, he says, is a harsh, rasping squeak, varied by a melodious, ringing whistle. I am indebted to this observing ornithologist for the following sketch of their peculiar characteristics:— “Brewer’s Blackbird is resident in Arizona, the most abundant bird of its family, and one of the most characteristic species of the Territory. It appears about Fort Whipple in flocks in September; the numbers are augmented during the following month, and there is little or no diminution until May, when the flocks disperse to breed.