These birds are said to be found in almost every locality except thick pine-woods without undergrowth, and are particularly fond of thick willow copses, heavy chaparral, and briery undergrowth. They prefer seeds and fruit, but insects also form a large part of their food. In the early spring they feed extensively on the tender fresh buds of young willows, which give to their flesh a bitter taste.
This Quail is said to have three distinct notes,—the common cry uttered on all occasions of alarm or to call the bevy together, which is a single mellow clear “chink,” with a metallic resonance, repeated an indefinite number of times; then a clear, loud, energetic whistle, resembling the syllables killink-killink, chiefly heard during the pairing-season, and is analogous to the bob-white of the common Quail; the third is its love-song, than which, Dr. Coues adds, nothing more unmusical can well be imagined. It is uttered by the male, and only when the female is incubating. This song is poured forth both at sunrise and at sunset, from some topmost twig near the spot where his mate is sitting on her treasures; and with outstretched neck, drooping wings, and plume negligently dangling, he gives utterance to his odd, guttural, energetic notes.
The flight of these birds is exceedingly rapid and vigorous, and is always even and direct, and in shooting only requires a quick hand and eye.
In his journey from Arizona to the Pacific, Dr. Coues found these birds singularly abundant along the valley of the Colorado; and he was again struck with its indifference as to its place of residence, being equally at home in scorched mesquite thickets, dusting itself in sand that would blister the naked feet, the thermometer at 117° Fah. in the shade, and in the mountains of Northern Arizona, when the pine boughs were bending under the weight of the snow. He also states that Dr. Cooper, while at Fort Mohave, brought up some young Gambel’s Quails by placing the eggs under a common Hen, and found no difficulty in domesticating them, so that they associated freely with the barnyard fowls. The eggs, he adds, are white, or yellowish-white, with brown spots, and were hatched out in twenty-four days. The nest is said to be a rather rude structure, about eight inches wide, and is usually hidden in the grass. The eggs number from twelve to seventeen.
Captain S. G. French, quoted by Mr. Cassin, writes that he met with this species on the Rio Grande, seventy miles below El Paso, and from that point to the place named their numbers constantly increased. They appeared to be partial to the abodes of man, and were very numerous about the old and decayed buildings, gardens, fields, and vineyards around Presidio, Isoleta, and El Paso. During his stay there in the summer of 1851, every morning and evening their welcome call was heard all around; and at early and late hours they were constantly to be found in the sandy roads and paths near the villages and farms. In the middle of the hot summer days, however, they rested in the sand, under the shade and protection of the thick chaparral. When disturbed, they glided through the bushes very swiftly, seldom resorting to flight, uttering a peculiar chirping note. The parents would utter the same chirping cry whenever an attempt was made to capture their young. The male and female bird were always found with the young, showing much affection for them, and even endeavoring to attract attention away from them by their actions and cries.
Colonel McCall (Proc. Phil. Ac., June, 1851) also gives an account of this bird, as met with by him in Western Texas, between San Antonio and the Rio Grande River, as well as in New Mexico. He did not fall in with it until he had reached the Limpia River, a hundred miles west of the Pecos, in Texas, where the Acacia glandulosa was more or less common, and the mesquite grasses and other plants bearing nutritious seeds were abundant. There they were very numerous and very fat, and much disposed to seek the farms and cultivate the acquaintance of man. About the rancho of Mr. White, near El Paso, he found them very numerous, and, in flocks of fifty or a hundred, resorting morning and evening to the barnyard, feeding around the grain-stacks in company with the poultry, and receiving their portion from the hand of the owner. He found them distributed through the country from the Limpia to the Rio Grande, and along the latter river from Eagle Spring Pass to Doña Ana.
The same careful observer, in a communication to Mr. Cassin, gives the western limit of this species. He thinks it is confined to a narrow belt of country between the 31st and 34th parallels of latitude, from the Pecos River, in Texas, to the Sierra Nevada and the contiguous desert in California. It has not been found on the western side of these mountains. Colonel McCall met with it at Alamo Mucho, forty-four miles west of the Colorado River. West of this stretches a desolate waste of sand,—a barrier which effectually separates this species from its ally, the California Quail.
This species is known to be abundant in the country around the sources of the Gila River, and has also been found along that river from the Pimo villages to its mouth, and there is no doubt that it inhabits the entire valley of the Gila. It was also common along the Colorado River, as far as the mouth of the Gila, and has been met with in that valley as high up as Tampia Creek, latitude 34°.
Colonel McCall regards this species as less wild and vigilant than the California species. It is later in breeding, as coveys of young California Quails were seen, one fourth grown, June 4, while all the birds of Gambel’s were without their young as late as June 16. The voice of the male at this season is described as strikingly rich and full. The cry may be imitated by slowly pronouncing in a low tone the syllables kaa-wale, kaa-wale. When the day is calm and still, these notes may be heard to a surprising distance. This song is continued, at short intervals, in the evening, for about an hour. Later in the season when a covey is dispersed, the cry for reassembling is said to resemble qua-el qua-el. The voice of this bird at all seasons bears a great resemblance to that of the California Quail, but has no resemblance to that of the eastern Ortyx virginiana. In their crops were found the leaves of the mesquite, coleopterous insects, wild gooseberries, etc.