In the English translation of Przewalski’s ‘Mongolia’ the habits of this species are described as follows:-- “These antelopes are gregarious, their herds sometimes numbering several hundreds or even thousands in those parts where food is plentiful, but they are most frequently seen in smaller numbers of from fifteen to thirty or forty head. Although they avoid the neighbourhood of man, they always select the best pasturages of the desert, and, like the Mongols, migrate from place to place in search of food, sometimes travelling great distances, especially in summer, when the drought drives them to the rich pasture-lands of Northern Mongolia, and as far as the confines of Trans-Baikalia. The deep snows of winter often compel them to travel several hundred miles in search of places almost or entirely free from snow. These animals belong exclusively to the plains, and carefully avoid the hilly country, but sometimes appear in the undulating parts of the steppe, particularly in spring, attracted by the young grass, which shoots up under the influence of the sun’s warmth. They shun thickets and high grass, excepting at the time of parturition, which is in May, when the doe seeks the covert to conceal her new-born offspring. But a few days after their birth the fawns follow their mothers about everywhere, and soon rival the fleet-footedness of their sires. They very seldom utter any sound, though the males occasionally give a short loud bleat. Nature has endowed them with excellent sight, hearing, and smell; their swiftness is marvellous and their intelligence well developed, qualities which prevent their falling so easy a prey as they otherwise would to their enemies--man and the wolf. “The Mongols, armed with their poor matchlocks, hunt the dzerens in the following way. In those parts of the steppe where these antelopes abound they dig small pits at certain distances apart. These holes at first excite mistrust, so the animals are left alone for some weeks to get used to them. The hunters then repair to their allotted stations, and conceal themselves in the pits, while others make a wide circuit to windward and drive the herd towards the ambush. No gun is fired till they are within a distance of fifty paces or even less. The drivers must know their business and be thoroughly familiar with the habits of the animal, otherwise their labour will be lost. They must never gallop suddenly up to the herd--because if they do the antelopes almost always escape. The usual plan is to make a circuit round the herd, slowly narrowing the circle with repeated halts, or else to ride on one flank at a foot’s pace, gradually edging the herd towards the ambush.