The Beaver and his Works

I have never been able to decide which I love best, birds or trees, but as these are really comrades it does not matter, for they can take first place together. But when it comes to second place in my affection for wild things, this, I am sure, is filled by the beaver.

The beaver has so many interesting ways, and is altogether so useful, so thrifty, so busy, so skillful, and so picturesque, that I believe his life and his deeds deserve a larger place in literature and a better place in our hearts. His engineering works are of great value to man. They not only help to distribute the waters and beneficially control the flow of the streams, but they also catch and save from loss enormous quant.i.ties of the earth's best plant-food. In helping to do these two things,--governing the rivers and fixing the soil,--he plays an important part, and if he and the forest had their way with the water-supply, floods would be prevented, streams would never run dry, and a comparatively even flow of water would be maintained in the rivers every day of the year.

A number of beaver establishing a colony made one of the most interesting exhibitions of constructive work that I have ever watched.

The work went on for several weeks, and I spent hours and days in observing operations. My hiding-place on a granite crag allowed me a good view of the work,--the cutting and transportation of the little logs, the dam-building, and the house-raising. I was close to the trees that were felled. Occasionally, during the construction work of this colony, I saw several beaver at one time cutting trees near one another. Upon one occasion, one was squatted on a fallen tree, another on the limb of a live one, and a third upon a boulder, each busy cutting down his tree. In every case, the tail was used for a combination stool and brace. While cutting, the beaver sat upright and clasped the willow with fore paws or put his hands against the tree, usually tilting his head to one side. The average diameter of the trees cut was about four inches, and a tree of this size was cut down quickly and without a pause.

When the tree was almost cut off, the cutter usually thumped with his tail, at which signal all other cutters near by scampered away. But this warning signal was not always given, and in one instance an unwarned cutter had a narrow escape from a tree falling perilously close to him.

Before cutting a tree, a beaver usually paused and appeared to look at its surroundings as if choosing a place to squat or sit while cutting it down; but so far as I could tell, he gave no thought as to the direction in which the tree was going to fall. This is true of every beaver which I have seen begin cutting, and I have seen scores. But beavers have individuality, and occasionally I noticed one with marked skill or decision. It may be, therefore, that some beaver try to fell trees on a particular place. In fact, I remember having seen in two localities stumps which suggested that the beaver who cut down the trees had planned just how they were to fall. In the first locality, I could judge only from the record left by the stumps; but the quarter on which the main notch had been made, together with the fact that the notch had in two instances been made on a quarter of the tree where it was inconvenient for the cutter to work, seemed to indicate a plan to fell the tree in a particular direction. In the other locality, I knew the att.i.tude of the trees before they were cut, and in this instance the evidence was so complete and conclusive that I must believe the beaver that cut down these trees endeavored to get them to fall in a definite direction. In each of these cases, however, judging chiefly from the teeth-marks, I think the cuttings were done by the same beaver. Many observations induce me to believe, however, that the majority of beaver do not plan how the trees are to fall.

Once a large tree is on the ground, the limbs are trimmed off and the trunk is cut into sections sufficiently small to be dragged, rolled, or pushed to the water, where transportation is easy.

The young beaver that I have seen cutting trees have worked in leisurely manner, in contrast with the work of the old ones. After giving a few bites, they usually stop to eat a piece of the bark, or to stare listlessly around for a time. As workers, young beaver appear at their best and liveliest when taking a limb from the hillside to the house in the pond. A young beaver will catch a limb by one end in his teeth, and, throwing it over his shoulder in the att.i.tude of a puppy racing with a rope or a rag, make off to the pond. Once in the water, he throws up his head and swims to the house or the dam with the limb held trailing out over his back.

The typical beaver-house seen in the Rockies at the present time stands in the upper edge of the pond which the beaver-dam has made, near where the brook enters it. Its foundation is about eight feet across, and it stands from five to ten feet in height, a rude cone in form. Most houses are made of sticks and mud, and are apparently put up with little thought for the living-room, which is later dug or gnawed from the interior. The entrance to the house is below water-level, and commonly on the bottom of the lake. Late each autumn, the house is plastered on the outside with mud, and I am inclined to believe that this plaster is not so much to increase the warmth of the house as to give it, when the mud is frozen, a strong protective armor, an armor which will prevent the winter enemies of the beaver from breaking into the house.

Each autumn beaver pile up near by the house, a large brush-heap of green trunks and limbs, mostly of aspen, willow, cottonwood, or alder.

This is their granary, and during the winter they feed upon the green bark, supplementing this with the roots of water-plants, which they drag from the bottom of the pond.

Along in May five baby beaver appear, and a little later these explore the pond and race, wrestle, and splash water in it as merrily as boys.

Occasionally they sun themselves on a fallen log, or play together there, trying to push one another off into the water. Often they play in the ca.n.a.ls that lead between ponds or from them, or on the "slides." Toward the close of summer, they have their lessons in cutting and dam-building.

[Ill.u.s.tration: A BEAVER-HOUSE

Supply of winter food piled on the right]

A beaver appears awkward as he works on land. In use of arms and hands he reminds one of a monkey, while his clumsy and usually slow-moving body will often suggest the hippopotamus. By using head, hands, teeth, tail, and webbed feet the beaver accomplishes much. The tail of a beaver is a useful and much-used appendage; it serves as a rudder, a stool, and a ramming or signal club. The beaver _may_ use his tail for a trowel, but I have never seen him so use it. His four front teeth are excellent edge-tools for his logging and woodwork; his webbed feet are most useful in his deep-waterway transportation, and his hands in house-building and especially in dam-building. It is in dam-building that the beaver shows his greatest skill and his best headwork; for I confess to the belief that a beaver reasons. I have so often seen him change his plans so wisely and meet emergencies so promptly and well that I can think of him only as a reasoner.

I have often wondered if beaver make a preliminary survey of a place before beginning to build a dam. I have seen them prowling suggestively along brooks just prior to beaver-dam building operations there, and circ.u.mstantial evidence would credit them with making preliminary surveys. But of this there is no proof. I have noticed a few things that seem to have been considered by beaver before beginning dam-building,--the supply of food and of dam-building material, for instance, and the location of the dam so as to require the minimum amount of material and insure the creation of the largest reservoir. In making the dam, the beaver usually takes advantage of boulders, willow-clumps, and surface irregularities. But he often makes errors of judgment. I have seen him abandon dams both before and after completion. The apparent reasons were that the dam either had failed or would fail to flood the area which he needed or desired flooded. His endeavors are not always successful. About twenty years ago, near Helena, Montana, a number of beaver made an audacious attempt to dam the Missouri River. After long and persistent effort, however, they gave it up. The beaver may be credited with errors, failures, and successes. He has forethought. If a colony of beaver be turned loose upon a three-mile tree-lined brook in the wilds and left undisturbed for a season, or until they have had time to select a site and locate themselves to best advantage, it is probable that the location chosen will indicate that they have examined the entire brook and then selected the best place.

As soon as the beaver's brush dam is completed, it begins to acc.u.mulate trash and mud. In a little while, usually, it is covered with a ma.s.s of soil, shrubs of willow begin to grow upon it, and after a few years it is a strong, earthy, willow-covered dam. The dams vary in length from a few feet to several hundred feet. I measured one on the South Platte River that was eleven hundred feet long.

The influence of a beaver-dam is astounding. As soon as completed, it becomes a highway for the folk of the wild. It is used day and night.

Mice and porcupines, bears and rabbits, lions and wolves, make a bridge of it. From it, in the evening, the graceful deer cast their reflections in the quiet pond. Over it dash pursuer and pursued; and on it take place battles and courtships. It is often torn by hoof and claw of animals locked in death-struggles, and often, very often, it is stained with blood. Many a drama, picturesque, fierce, and wild, is staged upon a beaver-dam.

An interesting and valuable book could be written concerning the earth as modified and benefited by beaver action, and I have long thought that the beaver deserved at least a chapter in Marsh's masterly book, "The Earth as modified by Human Action." To "work like a beaver" is an almost universal expression for energetic persistence, but who realizes that the beaver has accomplished anything? Almost unread of and unknown are his monumental works.

The instant a beaver-dam is completed, it has a decided influence on the flow of the water, and especially on the quant.i.ty of sediment which the pa.s.sing water carries. The sediment, instead of going down to fill the channel below, or to clog the river's mouth, fill the harbor, and do damage a thousand miles away, is acc.u.mulated in the pond behind the dam, and a level deposit is formed over the entire area of the lake. By and by this deposit is so great that the lake is filled with sediment, but before this happens, both lake and dam check and delay so much flood-water that floods are diminished in volume, and the water thus delayed is in part added to the flow of the streams at the time of low water, the result being a more even stream-flow at all times.

The regulation of stream-flow is important. There are only a few rainy days each year, and all the water that flows down the rivers falls on these few rainy days. The instant the water reaches the earth, it is hurried away toward the sea, and unless some agency delays the run-off, the rivers would naturally contain water only on the rainy days and a little while after. The fact that some rivers contain water at all times is but evidence that something has held in check a portion of the water which fell during these rainy days.

[Ill.u.s.tration: A BEAVER-DAM IN WINTER]

Among the agencies which best perform this service of keeping the streams ever-flowing, are the forests and the works of the beaver.

Rainfall acc.u.mulates in the brooks. The brooks conduct the water to the rivers. If across a river there be a beaver-dam, the pond formed by it will be a reservoir which will catch and retain some of the water coming into it during rainy days, and will thus delay the pa.s.sage of all water which flows through it. Beaver-reservoirs are leaky ones, and if they are stored full during rainy days, the leaking helps to maintain the stream-flow in dry weather. A beaver-dam thus tends to distribute to the streams below it a moderate quant.i.ty of water each day. In other words, it spreads out or distributes the water of the few rainy days through all the days of the year. A river which flows steadily throughout the year is of inestimable value to mankind. If floods sweep a river, they do damage. If low water comes, the wheels of steamers and of manufactories cease to move, and damage or death may result. In maintaining a medium between the extremes of high and low water, the beaver's work is of profound importance. In helping beneficially to control a river, the beaver would render enormous service if allowed to construct his works at its source.

During times of heavy rainfall, the water-flow carries with it, especially in unforested sections, great quant.i.ties of soil and sediment. Beaver-dams catch much of the material eroded from the hillsides above, and also prevent much erosion along the streams which they govern. They thus catch and deposit in place much valuable soil, the cream of the earth, that otherwise would be washed away and lost,--washed away into the rivers and harbors, impeding navigation and increasing river and harbor bills.

There is an old Indian legend which says that after the Creator separated the land from the water he employed gigantic beavers to smooth it down and prepare it for the abode of man. This is appreciative and suggestive. Beaver-dams have had much to do with the shaping and creating of a great deal of the richest agricultural land in America. To-day there are many peaceful and productive valleys the soil of which has been acc.u.mulated and fixed in place by ages of engineering activities on the part of the beaver before the white man came. On both mountain and plain you may still see much of this good work accomplished by them. In the mountains, deep and almost useless gulches have been filled by beaver-dams with sediment, and in course of time changed to meadows. So far as I know, the upper course of every river in the Rockies is through a number of beaver-meadows, some of them acres in extent.

On the upper course of Grand River in Colorado, I once made an extensive examination of some old beaver-works. Series of beaver-dams had been extended along this stream for several miles, as many as twenty dams to the mile. Each succeeding dam had backed water to the one above it. These had acc.u.mulated soil and formed a series of terraces, which, with the moderate slope of the valley, had in time formed an extensive and comparatively level meadow for a great distance along the river. The beaver settlement on this river was long ago almost entirely destroyed, and the year before my arrival a cloudburst had fallen upon the mountain-slope above, and the down-rushing flood had, in places, eroded deeply into the deposits formed by the beaver-works. At one place the water had cut down twenty-two feet, and had brought to light the fact that the deposit had been formed by a series of dams one above the other, a new dam having been built or the old one increased in height when the deposit of sediment had filled, or nearly filled, the pond. This is only one instance. There are thousands of similar places in the Rockies where beaver-dams have acc.u.mulated deposits of greater or less extent than those on the Grand River.

Only a few beaver remain, and though much of their work will endure to serve mankind, in many places their old work is gone or is going to ruin for the want of attention. We are paying dearly for the thoughtless and almost complete destruction of this animal. A live beaver is far more valuable to us than a dead one. Soil is eroding away, river-channels are filling, and most of the streams in the United States fluctuate between flood and low water. A beaver colony at the source of every stream would moderate these extremes and add to the picturesqueness and beauty of many scenes that are now growing ugly with erosion. We need to cooperate with the beaver. He would a.s.sist the work of reclamation, and be of great service in maintaining the deep-waterways. I trust he will be a.s.sisted in colonizing our National Forests, and allowed to cut timber there without a permit.

The beaver is the Abou-ben-Adhem of the wild. May his tribe increase.

The Wilds without Firearms

Had I encountered the two gray wolves during my first unarmed camping-trip into the wilds, the experience would hardly have suggested to me that going without firearms is the best way to enjoy wild nature. But I had made many unarmed excursions beyond the trail before I had that adventure, and the habit of going without a gun was so firmly fixed and so satisfactory that even a perilous wolf encounter did not arouse any desire for firearms. The habit continued, and to-day the only way I can enjoy the wilds is to leave guns behind.

On that autumn afternoon I was walking along slowly, reflectively, in a deep forest. Not a breath of air moved, and even the aspen's golden leaves stood still in the sunlight. All was calm and peaceful around and within me, when I came to a little sunny frost-tanned gra.s.s-plot surrounded by tall, crowding pines. I felt drawn to its warmth and repose and stepped joyfully into it. Suddenly two gray wolves sprang from almost beneath my feet and faced me defiantly. At a few feet distance they made an impressive show of ferocity, standing ready apparently to hurl themselves upon me.

Now the gray wolf is a powerful, savage beast, and directing his strong jaws, tireless muscles, keen scent, and all-seeing eyes are exceedingly nimble wits. He is well equipped to make the severe struggle for existence which his present environment compels. In many Western localities, despite the high price offered for his scalp, he has managed not only to live, but to increase and multiply. I had seen gray wolves pull down big game. On one occasion I had seen a vigorous long-horned steer fall after a desperate struggle with two of these fearfully fanged animals. Many times I had come across scattered bones which told of their triumph; and altogether I was so impressed with their deadliness that a glimpse of one of them usually gave me over to a temporary dread.

The two wolves facing me seemed to have been asleep in the sun when I disturbed them. I realized the danger and was alarmed, of course, but my faculties were under control, were stimulated, indeed, to unusual alertness, and I kept a bold front and faced them without flinching.

Their expression was one of mingled surprise and anger, together with the apparent determination to sell their lives as dearly as possible.

I gave them all the attention which their appearance and their reputation demanded. Not once did I take my eyes off them. I held them at bay with my eyes. I still have a vivid picture of terribly gleaming teeth, bristling backs, and bulging muscles in savage readiness.

They made no move to attack. I was afraid to attack and I dared not run away. I remembered that some trees I could almost reach behind me had limbs that stretched out toward me, yet I felt that to wheel, spring for a limb, and swing up beyond their reach could not be done quickly enough to escape those fierce jaws.

Both sides were of the same mind, ready to fight, but not at all eager to do so. Under these conditions our nearness was embarra.s.sing, and we faced each other for what seemed, to me at least, a long time. My mind working like lightning, I thought of several possible ways of escaping, I considered each at length, found it faulty, and dismissed it. Meanwhile, not a sound had been made. I had not moved, but something had to be done. Slowly I worked the small folding axe from its sheath, and with the slowest of movements placed it in my right coat-pocket with the handle up, ready for instant use. I did this with studied deliberation, lest a sudden movement should release the springs that held the wolves back. I kept on staring. Statues, almost, we must have appeared to the "camp-bird" whose call from a near-by limb told me we were observed, and whose nearness gave me courage.

Then, looking the nearer of the two wolves squarely in the eye, I said to him, "Well, why don't you move?" as though we were playing checkers instead of the game of life. He made no reply, but the spell was broken. I believe that both sides had been bluffing. In attempting to use my kodak while continuing the bluff, I brought matters to a focus. "What a picture you fellows will make," I said aloud, as my right hand slowly worked the kodak out of the case which hung under my left arm. Still keeping up a steady fire of looks, I brought the kodak in front of me ready to focus, and then touched the spring that released the folding front. When the kodak mysteriously, suddenly opened before the wolves, they fled for their lives. In an instant they had cleared the gra.s.sy s.p.a.ce and vanished into the woods. I did not get their picture.

With a gun, the wolf encounter could not have ended more happily. At any rate, I have not for a moment cared for a gun since I returned enthusiastic from my first delightful trip into the wilds without one.

Out in the wilds with nature is one of the safest and most sanitary of places. Bears are not seeking to devour, and the death-list from lions, wolves, snakes, and all other bugbears combined does not equal the death-list from fire, automobiles, street-cars, or banquets. Being afraid of nature or a rainstorm is like being afraid of the dark.

The time of that first excursion was spent among scenes that I had visited before, but the discoveries I made and the deeper feelings it stirred within me, led me to think it more worth while than any previous trip among the same delightful scenes. The first day, especially, was excitingly crowded with new sights and sounds and fancies. I fear that during the earlier trips the rifle had obscured most of the scenes in which it could not figure, and as a result I missed fairyland and most of the sunsets.

[Ill.u.s.tration: LAKE ODESSA]

When I arrived at the alpine lake by which I was to camp, evening's long rays and shadows were romantically robing the picturesque wild border of the lake. The crags, the temples, the flower-edged snowdrifts, and the gra.s.s-plots of this wild garden seemed half-unreal, as over them the long lights and torn shadows grouped and changed, lingered and vanished, in the last moments of the sun.

The deep purple of evening was over all, and the ruined crag with the broken pine on the ridge-top was black against the evening's golden glow, when I hastened to make camp by a pine temple while the beautiful world of sunset's hour slowly faded into the night.

The camp-fire was a glory-burst in the darkness, and the small many-spired evergreen temple before me shone an illuminated cathedral in the night. All that evening I believed in fairies, and by watching the changing camp-fire kept my fancies frolicking in realms of mystery where all the world was young. I lay down without a gun, and while the fire changed and faded to black and gray the coyotes began to howl.

But their voices did not seem as lonely or menacing as when I had had a rifle by my side. As I lay listening to them, I thought I detected merriment in their tones, and in a little while their shouts rang as merrily as though they were boys at play. Never before had I realized that coyotes too had enjoyments, and I listened to their shouts with pleasure. At last the illumination faded from the cathedral grove and its templed top stood in charcoal against the clear heavens as I fell asleep beneath the peaceful stars.

The next morning I loitered here and there, getting acquainted with the lake-sh.o.r.e, for without a gun all objects, or my eyes, were so changed that I had only a dim recollection of having seen the place before. From time to time, as I walked about, I stopped to try to win the confidence of the small folk in fur and feathers. I found some that trusted me, and at noon a chipmunk, a camp-bird, a chickadee, and myself were several times busy with the same bit of luncheon at once.

Some years ago mountain sheep often came in flocks to lick the salty soil in a ruined crater on Specimen Mountain. One day I climbed up and hid myself in the crags to watch them. More than a hundred of them came. After licking for a time, many lay down. Some of the rams posed themselves on the rocks in heroic att.i.tudes and looked serenely and watchfully around. Young lambs ran about, and a few occasionally raced up and down smooth, rocky steeps, seemingly without the slightest regard for the laws of falling bodies. I was close to the flock, but luckily they did not suspect my presence. After enjoying their fine wild play for more than two hours, I slipped away and left them in their home among the crags.

One spring day I paused in a whirl of mist and wet snow to look for the trail. I could see only a few yards ahead. As I peered ahead, a bear emerged from the gloom, heading straight for me. Behind her were two cubs. I caught her impatient expression when she beheld me. She stopped, and then, with a growl of anger, she wheeled and boxed cubs right and left like an angry mother. The bears disappeared in the direction from which they had come, the cubs urged on with spanks from behind as all vanished in the falling snow.

The gray Douglas squirrel is one of the most active, audacious, and outspoken of animals. He enjoys seclusion and claims to be monarch of all he surveys, and no trespa.s.ser is too big to escape a scolding from him. Many times he has given me a terrible tongue-lashing with a desperate accompaniment of fierce facial expressions, bristling whiskers, and emphatic gestures. I love this brave fellow creature; but if he were only a few inches bigger, I should never risk my life in his woods without a gun.