On the Pacific coast the Chipping Sparrow is stated by Dr. Cooper to be quite as abundant in the northern parts of California, and in Oregon and Washington Territory, as on the Atlantic coast. He found them wintering in the Colorado Valley in large numbers, but met with none about San Diego. They spend their summers in the northern part of California, building their nests, as with us, in the shrubbery of the gardens, and coming familiarly about the doorsteps to pick up crumbs. In autumn they collect in large flocks, and frequent the open fields and pastures. Dr. Cooper found them in flocks on Catalina Island in June, but could discover no nests. They were all old birds, and the conclusion was that they had delayed their more northern migrations. Dr. Suckley found this species extremely abundant in the open districts on the Columbia River, as well as upon the gravelly prairies of the Puget Sound district. It is not named as having been met with by Mr. Dall or any of the Russian Telegraph party in Alaska. It was found in abundance during the summer by Mr. Ridgway in all the wooded portions of the country of the Great Basin. He did not meet with any among the cottonwoods of the river-valleys, its favorite haunts appearing to be the cedars and the nut-pines of the mountains. In July and August, in such localities, on the East Humboldt Mountains, it was not only the most numerous species, but also very abundant, nesting in the trees. About the middle of August they congregated in large numbers, preparing for their departure. At Sacramento it was also very abundant among the groves of small oaks. He could not observe the slightest difference in habits or notes between the eastern and the western specimens of this form. He found them breeding at Salt Lake City, June 19, the nest being in a scrub-oak, six feet from the ground. In Arizona, Dr. Coues found the Chippy a very abundant summer resident, arriving the third week of March and remaining until the latter part of November. A few may spend the winter there. As described, it seems more gregarious than it is with us, arriving in the spring, and remaining for a month or more in large flocks of fifty or upwards. In New England they always come in pairs, and only assemble in flocks just on the eve of their departure. Mr. Dresser met with these Sparrows, and obtained specimens of them, near San Antonio, on the 10th of April. Dr. Heermann, in his Report upon the birds observed in Lieutenant Williamson’s route between the 32d and 35th parallels, speaks of finding this species abundant.