“As the great herd proceeds northward it is constantly depleted, numbers wandering off to the right and left, until finally it is scattered in small herds far and wide over the vast feeding grounds, where they pass the summer.
“When the food in one locality fails they go to another, and towards fall, when the grass of the high prairie becomes parched by the heat and drought, they gradually work their way back to the south, concentrating on the rich pastures of Texas and the Indian Territory, whence, the same instinct acting on all, they are ready to start together on the northward march as soon as spring starts the grass.”
So long as the bison held undisputed possession of the great plains his migratory habits were as above — regular, general, and on a scale that was truly grand. The herds that wintered in Texas, the Indian Territory, and New Mexico probably spent their summers in Nebraska, southwestern Dakota, and Wyoming. The winter herds of northern Colorado, Wyoming, Nebraska, and southern Dakota went to northern Dakota and Montana, while the great Montana herds spent the summer on the Grand Coteau des Prairies lying between the Saskatchewan and the Missouri. The two great annual expeditions of the Red River half-breeds, which always took place in summer, went in two directions from Winnipeg and Pembina — one, the White Horse Plain division, going westward along the Qu’Appelle to the Saskatchewan country, and the other, the Red River division, southwest into Dakota. In 1840 the site of the present city of Jamestown, Dakota, was the northeastern limit of the herds that summered in Dakota, and the country lying between that point and the Missouri was for years the favorite hunting ground of the Red River division.
The herds which wintered on the Montana ranges always went north in the early spring, usually in March, so that during the time the hunters were hauling in the hides taken on the winter hunt the ranges were entirely deserted. It is equally certain, however, that a few small bauds remained in certain portions of Montana throughout the summer. But the main body crossed the international boundary, and spent the summer on the plains of the Saskatchewan, where they were hunted by the half-breeds from the Red River settlements and the Indians of the plains. It is my belief that in this movement nearly all the buffaloes of Montana and Dakota participated, and that the herds which spent the summer in Dakota, where they were annually hunted by the Red River half-breeds, came up from Kansas, Colorado, and Nebraska.
While most of the calves were born on the summer ranges, many were brought forth en route. It was the habit of the cows to retire to a secluded spot, if possible a ravine well screened from observation, bring forth their young, and nourish and defend them until they were strong enough to join the herd. Calves were born all the time from March to July, and sometimes even as late as August. On the summer ranges it was the habit of the cows to leave the bulls at calving time, and thus it often happened that small herds were often seen composed of bulls only. Usually the cow produced but one calf, but twins were not uncommon. Of course many calves were brought forth in the herd, but the favorite habit of the cow was as stated. As soon as the young calves were brought into the herd, which for prudential reasons occurred at the earliest possible moment, the bulls assumed the duty of protecting them from the wolves which at all times congregated in the vicinity of a herd, watching for an opportunity to seize a calf or a wounded buffalo which might be left behind. A calf always follows its mother until its successor is appointed and installed, unless separated from her by force of circumstances. They suck until they are nine months old, or even older, and Mr. McNaney once saw a lusty calf suck its mother (in January) on the Montana range several hours after she had been killed for her skin.
When a buffalo is wounded it leaves the herd immediately and goes off as far from the line of pursuit as it can get, to escape the rabble of hunters, who are sure to follow the main body. If any deep ravines are at hand the wounded animal limps away to the bottom of the deepest and most secluded one, and gradually works his way up to its very head, where he finds himself in a perfect cul-de-sac, barely wide enough to admit him. Here he is so completely hidden by the high walls and numerous bends that his pursuer must needs come within a few feet of his horns before his huge bulk is visible. I have more than once been astonished at the real impregnability of the retreats selected by wounded bison. In following up wounded bulls in ravine headings it always became too dangerous to make the last stage of the pursuit on horseback, for fear of being caught in a passage so narrow as to insure a fatal accident to man or horse in case of a sudden discovery of the quarry. I have seen wounded bison shelter in situations where a single bull could easily defend himself from a whole pack of wolves, being completely walled in on both sides and the rear, and leaving his foes no point of attack save his head and horns.
Bison which were nursing serious wounds most often have gone many days at a time without either food or water, and in this connection it may be mentioned that the recuperative power of a bison is really wonderful. Judging from the number of old leg wounds, fully healed, which I have found in freshly killed bisons, one may be tempted to believe that a bison never died of a broken leg. One large bull which I skeletonized had had his humerus shot squarely in two, but it had united again more firmly than ever. Another large bull had the head of his left femur and the hip socket shattered completely to pieces by a big ball, but he had entirely recovered from it, and was as lusty a runner as any bull we chased. We found that while a broken leg was a misfortune to a buffalo, it always took something more serious than that to stop him.
VI. The Food of the Bison
It is obviously impossible to enumerate all the grasses which served the bison as food on his native heath without presenting a complete list of all the plants of that order found in a given region; but it is at least desirable to know which of the grasses of the great pasture region were his favorite and most common food. It was the nutritious character and marvelous abundance of his food supply which enabled the bison to exist in such absolutely countless numbers as characterized his occupancy of the great plains. The following list comprises the grasses which were the bison’s principal food, named in the order of their importance:
Bouteloua oligostachya (buffalo, grama, or mesquite grass). — This remarkable grass formed the pièce de résistance of the bison’s bill of fare in the days when he flourished, and it now comes to us daily in the form of beef produced of primest quality and in greatest quantity on what was until recently the great buffalo range. This grass is the most abundant and widely distributed species to be found in the great pasture region between the eastern slope of the Rocky Mountains and the nineteenth degree of west longitude. It is the principal grass of the plains from Texas to the British Possessions, and even in the latter territory it is quite conspicuous. To any one but a botanist its first acquaintance means a surprise. Its name and fame lead the unacquainted to expect a grass which is tall, rank, and full of “fodder,” like the “blue joint” (Andropogon provincialis). The grama grass is very short, the leaves being usually not more than 2 or 3 inches in length and crowded together at the base of the stems. The flower stalk is about a foot in height, but on grazed lands are eaten off and but seldom seen. The leaves are narrow and inclined to curl, and lie close to the ground. Instead of developing a continuous growth, this grass grows in small, irregular patches, usually about the size of a man’s hand, with narrow strips of perfectly bare ground between them. The grass curls closely upon the ground, in a woolly carpet or cushion, greatly resembling a layer of Florida moss. Even in spring-time it never shows more color than a tint of palest green, and the landscape which is dependent upon this grass for color is never more than “a gray and melancholy waste.” Unlike the soft, juicy, and succulent grasses of the well-watered portions of the United States, the tiny leaves of the grama grass are hard, stiff, and dry. I have often noticed that in grazing neither cattle nor horses are able to bite off the blades, but instead each leaf is pulled out of the tuft, seemingly by its root.