It flies very swiftly, but with a gentle floating motion, very much in the manner of the Robin. In its movements among the small cedars, it generally alighted upon the summit of a tree, and, quietly sitting there, would look about in the manner of the Picicorvus columbianus. In flying, it continually uttered a very peculiar querulous note, resembling very much one of the notes of the Magpie,—the peculiarly soft note of that bird uttered during the love-season, or when its nest is approached. In searching among the cedars, Mr. Ridgway found several of its nests. Nearly all had been deserted, and there were several families of fully fledged young flying about. One nest contained four fully feathered young. When these had been taken, and placed in a hat, they all jumped out, squalling vociferously. These nests were all saddled upon horizontal branches of cedars, and, except in their greater bulk, they closely resembled the nest of the eastern Blue Jay.
In autumn and in winter the large flocks of these birds, as they fly back and forth over the hills, present a very peculiar appearance. Their flight is then very swift.
Dr. Kennerly, in November, 1853, frequently saw large flocks of these birds between the Puebla of Laguna and the Sierra Madre, about a hundred miles west of Albuquerque, in New Mexico. They were found chiefly frequenting the watercourses, and when startled would circle around, rising higher above their heads, uttering their singular cries; then suddenly descending
they would alight in the top of some tree on the adjoining cliffs. He compares its voice to that of the common Catbird.
Dr. T. C. Henry also repeatedly noticed these birds in the vicinity of Fort Webster, in New Mexico. He first met with them near San Miguel, in July, 1852, where he observed a party of about thirty flitting through the cedars along the roadside. They were chiefly young birds, and were constantly alighting on the ground for the purpose of capturing lizards, which they killed with great readiness, and devoured. After that he repeatedly, in winter, saw these birds near Fort Webster, and usually in flocks of about forty or fifty. They evinced great wariness, and were very difficult of approach.
The flocks would usually alight near the summit of a hill and pass rapidly down its sides, all the birds keeping quite near to each other, and frequently alighting on the ground. They appeared to be very social, and kept up a continual twittering note. This bird, so far as Dr. Henry observed it, is exclusively a mountain species, and never seen on the plains or bottom-lands, and was never observed singly, or even in a single pair, but always in companies.
Dr. Newberry met with this species in the basin of the Des Chutes, in Oregon. He first noticed it in September. Early every morning flocks of from twenty-five to thirty of these birds came across, in their usual straggling flight, chattering as they flew to the trees on a hill near the camp, and then, from tree to tree, they made their way to the stream to drink. He describes their note, when flying or feeding, as a frequently repeated ca-ca-că. Sometimes, when made by a straggler separated from mate or flock, it was rather loud and harsh, but was usually soft and agreeable. When disturbed, their cry was harsher. They were very shy, and could only be shot by lying in wait for them. Subsequently he had an opportunity of seeing them feed, and of watching them carefully as they were eating the berries of the cedars, and in their habits and cries they seemed closely to resemble Jays. A specimen, previously killed, was found with its crop filled with the seeds of the yellow pine.
Dr. Cooper has seen specimens of this bird from Washoe, just east of the California State line, and he was informed by Mr. Clarence King that they frequent the junipers on mountains near Mariposa.
From Dr. Coues we learn that this bird is very abundant at Fort Whipple, where it remains all the year. It breeds in the retired portions of the neighboring mountains of San Francisco and Bill Williams, the young leaving the nest in July. As the same birds are ready to fly in April, at Carson City, it may be that they have two broods in Arizona. During the winter they collect in immense flocks, and in one instance Dr. Coues estimates their number at a thousand or more. In a more recent contribution to the Ibis (April, 1872), Dr. Coues gives a more full account of his observations in respect to this bird. In regard to geographical range he considers its
distribution very nearly the same with that of the Picicorvus. Mr. Aiken has recently met with these birds in Colorado Territory, where, however, Mr. Allen did not obtain specimens. General McCall found these birds abundant near Santa Fé, in New Mexico, at an altitude Of seven thousand feet; and the late Captain Feilner obtained specimens at Fort Crook, in Northeastern California. Dr. Coues considers its range to be the coniferous zone of vegetation within the geographical area bounded eastward by the foot-hills and slopes of the Rocky Mountains; westward by the Cascade and Coast ranges; northward, perhaps to Sitka, but undetermined; and somewhat so southward, not traced so far as the tierra fria of Mexico.