“The habits of this species are different from those of any other species of partridge that I have met with. They were in covies of from eight to twelve individuals, and appeared to be extremely simple and affectionate in disposition. In feeding, they separated but little, keeping up a social _cluck_ all the time. They were so gentle as to evince little or no alarm on the approach of man; scarcely moving out of his way as he passed, and only running off or flying a few yards, when perhaps half their numbers were laid low by a shot. This inclined me to think they might with little difficulty be domesticated, although I found them here in a boundless, barren waste, and nowhere near the habitation of man. This trait of gentleness is the very opposite of those strikingly manifested by the scaly partridge, (_Callipepla squamata_,) which I always observed to be, though found perchance in grounds as little frequented as these, remarkably vigilant, shy, and difficult to approach. The call or signal note of this species is peculiar. I never saw it after crossing the Pecos river.” Col. McCall’s observations on the habits of this bird confirm an opinion expressed by Mr. Gould in his Monograph of American Partridges: “No account whatever has yet reached us of the habits and economy of this species, which, judging from the comparative shortness of the toes, and the great development of its claws, we may expect to be different from those of other members of the family.” The circular spots which are numerous on the inferior parts of the body in this partridge, appear to indicate as a character an analogy to the Guinea fowls, which is further sustained by its habit of uttering its note continually when in company with its fellows, or when feeding. The Guinea fowls in their native wilds also associate in small parties, and take wing only reluctantly, and for short distances. Capt. S. G. French, of the U. S. Army, has most kindly and very opportunely presented us with fine specimens of this and other species preserved in spirits, for which, as well as for some valuable memoranda, we beg here to express our gratitude. He remarks, with reference to this species: “It was in the summer of 1846, when crossing the then pathless and untrodden plains or table lands which extend westwardly from San Antonio, Texas, to New Mexico, that I first met with this beautiful partridge. On a bright summer afternoon, I undertook the ascent of a high rocky mountain for the purpose of obtaining a view of the valley through which the San Pedro river takes its course, and when I had gained the summit I observed several of these birds, a few feet only in advance of me, running along over the fragments of rocks and through the dwarf bushes, which grew wherever there was sufficient soil. Their handsome plumage and their gentleness attracted my attention, and I felt many regrets that I had left my gun behind me, thereby losing the opportunity of securing specimens for examination.