“This beautiful bird, whose habits, in some respects, bear resemblance to the common partridge, like that, seems to prefer a more genial and hospitable region. In this part of the country, the Mesquite tree (Acacia glandulosa) is more or less common; and the Mesquite grass, and other plants bearing nutritious seeds, are abundant. Here, this partridge increases rapidly in numbers, and becomes very fat; and, as I afterwards ascertained, is much disposed to seek the farms, if any be within reach, and to cultivate the acquaintance of man. About the rancho of Mr. White, near El Paso, I found them very numerous; and here, in flocks of fifty or a hundred, they resort, morning and evening, to the barn-yard, and feed around the grain stacks, in company with the poultry, where they receive their portion, as it is scattered amongst them by the hand of the owner. I found them distributed through the country from the Limpia to the Rio Grande, a range from east to west exceeding one hundred miles; and along the Rio Grande, from Eagle Spring Pass to Don Ana, a distance of one hundred and twenty miles. North of this I did not see them. I was not among them during the season of incubation.” But the most comprehensive and complete account ever before published of this Partridge, has been furnished by the same gentleman (Col. McCall) for insertion into our present article; for which, and for many other similar favours from him, we beg to tender our deep sense of obligation. “Whilst in California, during the last summer, (1852,) I was enabled to ascertain the western limit of this species as satisfactorily as I had previously ascertained its eastern limit within the State of Texas. And, although the extent of its range to the north is not yet clearly established, it may be said that the portion of our territory inhabited by this beautiful bird is a rather narrow belt of country, (say one thousand miles long by two hundred broad,) embraced between the 31st and 34th parallels of north latitude, and extending from the Pecos river in Texas to the Sierra Nevada and the contiguous desert in California. Be it understood, however, that when I speak of a narrow belt of country along a certain parallel, I do not intend to say that the _habitat_ of the species does not extend beyond this belt into _Mexico_; but that the river Gila being our southern boundary through the greater part of the region referred to, the portion of our own territory inhabited by this bird is confined to such a belt as I have indicated.