Habits. These birds, Mr. Ridgway states, have a very general distribution, extending as far west as the eastern base of the Sierra Nevada. At Carson City, February 27, he heard for the first time their sweet sad chant. A week later he found the sage-brush full of these birds, the males being in full song and answering one another from all directions. In walking through the sage-brush these Sparrows were seen on every side, some running upon the ground with their tails elevated, uttering a chipping twitter, as they sought to conceal themselves behind the shrubs. Some were seen to alight upon the tops of dead stalks, where they sit with their tails expanded almost precisely after the manner of the Kingbird. The song of this bird is feeble, but is unsurpassed for sweetness and sadness of tone. While its effect is very like the song of a Meadow Lark singing afar off, there is, besides its peculiar sadness, something quite unique in its modulation and delivery. It is a chant, in style somewhat like the spring warbling of the Shore Lark.
On the 24th of March, at Carson City, he found these Sparrows very abundant and everywhere the predominating species, as it was also the most unsuspicious and familiar. It was even difficult to keep them from under the feet. A pair would often run before him for a distance of several rods with their unexpanded tails elevated, and when too nearly approached would only dodge in among the bushes instead of flying off.
On the 9th of April, walking among the sage-brush near Carson City, Mr. Ridgway found several nests of this Sparrow, the female parent in each
instance betraying the position of her nest by running out, as he approached, from the bush beneath which it was concealed. With elevated tail, running rapidly and silently away, they disappeared among the shrubbery. In such cases a careful examination of the spot was sure to result in finding an artfully concealed nest, either embedded in the ground or a few inches above it in the lower branches of the bush. He did not find this species east of the northern end of Great Salt Lake, nor was it seen in the neighborhood of Salt Lake City, where the other species was so abundant.
The eggs of this species differ very essentially from those of the P. bilineata. They are oblong in shape, have a light greenish ground, marked all over the egg with very fine dots of a reddish-brown, and around the larger end with a ring of confluent blotches of dark purple and lines of a darker brown, almost black. They measure .80 by .60 of an inch. They resemble very closely a not uncommon variety of the eggs of the Spizella pusilla.
Footnotes:
[1] We are indebted to Professor Theodore N. Gill for the present account of the characteristics of the class of Birds as distinguished from other vertebrates, pages XI-XV.
[2] Dr. Coues, in his “Key to North American Birds,” gives an able and extended article on the general characteristics of birds, and on their internal and external anatomy, to which we refer our readers. A paper by Professor E. S. Morse in the “Annals of the New York Lyceum of Natural History” (X, 1869), “On the Carpus and Tarsus of Birds,” is of much scientific value.
[3] Carus and Gerstaecker (Handbuch der Zoologie, 1868, 191) present the following definition of birds as a class:—