The Spell of the Rockies

by Enos A. Mills

Most beaver dams are so situated that they are destined earlier or later to accumulate sediment, trash, and fallen leaves, and become earthy; then they will, of course, be planted by Nature with grass, shrubby willows, and even trees. I have seen many trees with birds' nests in them standing on a beaver dam; yet the original dam had been composed almost entirely of sticks or stones.

Why do beavers want or need ponds? They have very heavy bodies and extremely short legs. On land they are slow and awkward and in the greatest danger from their enemies,—wolves, lions, bears, and wildcats; but they are excellent swimmers, and in water they easily elude their enemies, and through it they conveniently bring their harvests home. Water is necessary for their existence, and to have this at all times compels the construction of dams and ponds.

In the new Moraine Colony one of the houses was torn to pieces by some animal, probably a bear. This was before Thanksgiving. About midwinter a prospector left his tunnel a few miles away, came to the colony, and dynamited a house, and "got seven of them." Next year two houses were built on the ruins of the two just fallen. That year's harvest-home was broken by deadly attacks of enemies. In gathering the harvest the beavers showed a preference for some aspens that were growing in a moist place about one hundred feet from the water. Whether it was the size of these or their peculiar flavor that determined their election in preference to nearer ones, I could not determine. One day, while several beavers were cutting here, they were surprised by a mountain lion, which leaped upon and killed one of the harvesters. The next day the lion surprised and killed another. Two or three days later a coyote killed one on the same blood-stained spot, and then overtook and killed two others as they fled for the water. I could not see these deadly attacks from the boulder-pile, but in each case the sight of flying beavers sent me rushing upon the scene, where I beheld the cause of their desperate retreat. But despite dangers they persisted until the last of these aspens was harvested. During the winter the bark was eaten from these, and the next season their clean wood was used in the walls of a new house.

One spring I several times visited a number of colonies while trying to determine the number of young brought forth at a birth. Six furry little fellows sunning themselves on top of their rude home were the first discovery; this was the twelfth of May. By the close of the month I had come in sight of many youngsters, and found the average number to be five. One mother proudly exhibited eight, while another, one who all winter had been harassed by trappers and who lived in a burrow on the bank, could display but one. In the Moraine Colony the three sets of youngsters numbered two, three, and five. Great times these had as they were growing up. They played over the house, and such fun they had nosing and pushing each other off a large boulder into the water! A thousand merry ripples they sent to the shore as they raced, wrestled, and dived in the pond, both in the sunshine and in the shadows of the willows along the shore.

The beaver has a rich birthright, though born in a windowless hut of mud. Close to the primitive place of his birth the wild folk of both woods and water meet and often mingle; around it are the ever-changing, never-ending scenes and silences of the water or the shore. He grows up with the many-sided wild, playing amid the enameled flowers, the great boulders,—the Ice King's marbles,—and the fallen logs in the edge of the mysterious forest; learning to swim and slide; listening to the strong, harmonious stir of wind and water; living with the stars in the sky and the stars in the pond; beginning serious life when brilliant clouds of color enrich the hills; helping to harvest the trees that wear the robes of gold, while the birds go by for the southland in the reflective autumn days. If Mother Nature should ever call me to live upon another planet I could wish that I might be born a beaver, to inhabit a house in the water.

A BEAVER HOUSE IN WINTER

The autumn of the year when I watched the young beavers I had the pleasure of seeing some immigrants pass me en route for a new home in the Moraine Colony. Of course they may have been only visitors, or have come temporarily to assist in the harvesting; but I like to think of them as immigrants, and a number of things testified that immigrants they were. One evening I had long been lying on a boulder by the stream below the colony, waiting for a gift from the gods. It came. Out of the water within ten feet of me scrambled the most patriarchal, as well as the largest, beaver that I have ever seen. I wanted to take off my hat to him, I wanted to ask him to tell me the story of his life, but from long habit I simply lay still and watched and thought in silence. He was making a portage round a cascade. As he scrambled up over the rocks, I noticed that he had but two fingers on his right hand. He was followed, in single file, by four others; one of these was minus a finger on the left hand. The next morning I read that five immigrants had arrived in the Moraine Colony. They had registered their footprints in the muddy margin of the lower pond. Had an agent been sent to invite these colonists, or had they come out of their own adventurous spirit? The day following their arrival I trailed them backward in the hope of learning whence they came and why they had moved. They had traveled in the water most of the time; but in places they had come out on the bank to go round a waterfall or to avoid an obstruction. Here and there I saw their tracks in the mud and traced them to a beaver settlement in which the houses and dams had been recently wrecked. A near-by rancher told me that he had been "making it hot" for all beavers in his meadow. During the next two years I occasionally saw this patriarchal beaver or his tracks thereabout.

It is the custom among old male beavers to idle away two or three months of each summer in exploring the neighboring brooks and streams. But they never fail to return in time for autumn activities. It thus becomes plain how, when an old colony needs to move, some one in it knows where to go and the route to follow.

I had enjoyed the ways of "our first engineers" for several years before it dawned upon me that their works might be useful to man and that the beaver might justly be called the first conservationist. One dry winter the stream through the Moraine Colony ran low and froze to the bottom, and the only trout in it that survived were those in the deep holes of these beaver ponds. Another demonstration of their usefulness came one gray day. The easy rain of two days ended in a heavy downpour and a deluge of water on the mountainside above. This mountain-slope was still barren from the forest fire. It had but little to absorb or delay the excess of water, which was speedily shed into the stream below. Flooding down the stream's channel came a roaring avalanche or waterslide, with a rubbish-filled front that was five or six feet high. This expanded as it rolled into the pond and swept far out on the sides, while the front, greatly lowered, rushed over the dam. Much of this water was caught and temporarily detained in the ponds, and by the time it poured over the last dam its volume was greatly reduced and its speed checked. The ponds had broken the rush and prevented a flood.