Part 26

Did it ever occur to you to think what the first nest was like--what home the first reptile-like scale flutterers chose? Far back before Jurassic times, millions of years ago, before the coming of bony fishes, when the only mammals were tiny nameless creatures, hardly larger than mice; when the great Altantosaurus dinosaurs browsed on the quaint herbage, and Pterodactyls--those ravenous bat-winged dragons of the air--hovered above the surface of the earth,--in this epoch we can imagine a pair of long-tailed, half-winged creatures which skimmed from tree to tree, perhaps giving an occasional flop--the beginning of the marvellous flight motions. Is it not likely that the Teleosaurs who watched hungrily from the swamps saw them disappear at last in a hollowed cavity beneath a rotten knothole? Here, perhaps, the soft-shelled, lizard-like eggs were laid, and when they gave forth the ugly creaturelings did not Father Creature flop to the topmost branch and utter a gurgling cough, a most unpleasant grating sound, but grand in its significance, as the opening chord in the symphony of the ages to follow?--until now the mockingbird and the nightingale hold us spellbound by the wonder of their minstrelsy.

Turning from our imaginary picture of the ancient days, we find that some of the birds of the present time have found a primitive way of nesting still the best. If we push over this rotten stump we shall find that the cavity near the top, where the wood is still sound, has been used the past summer by the downy woodpecker--a front door like an auger hole, ceiling of rough-hewn wood, a bed of chips!

The chickadee goes a step further, and shows his cleverness in sometimes choosing a cavity already made, and instead of rough, bare chips, the six or eight chickadee youngsters are happy on a hair mattress of a closely woven felt-like substance.

Perhaps we should consider the kingfisher the most barbarous of all the birds which form a shelter for their home. With bill for pick and shovel, she bores straight into a sheer clay bank, and at the end of a six-foot tunnel her young are reared, their nest a mass of fish bones--the residue of their dinners. Then there are the aerial masons and brickmakers--the eave swallows, who carry earth up into the air, bit by bit, and attach it to the eaves, forming it into a globular, long-necked flask. The barn swallows mix the clay with straw and feathers and so form very firm structures on the rafters above the haymows.

But what of the many nests of grasses and twigs which we find in the woods? How closely they were concealed while the leaves were on the trees, and how firm and strong they were while in use, the strongest wind and rain of summer only rocking them to and fro! But now we must waste no time or they will disappear. In a month or more almost all will have dissolved into fragments and fallen to earth--their mission accomplished.

Some look as if disintegration had already begun, but if we had discovered them earlier in the year, we should have seen that they were never less fragile or loosely constructed than we find them now. Such is a cuckoo's nest, such a mourning dove's or a heron's; merely a flat platform of a few interlaced twigs, through which the eggs are visible from below. Why, we ask, are some birds so careless or so unskilful? The European cuckoo, like our cowbird, is a parasite, laying her eggs in the nests of other birds; so, perhaps, neglect of household duties is in the blood. But this style of architecture seems to answer all the requirements of doves and herons, and, although with one sweep of the hand we can demolish one of these flimsy platforms, yet such a nest seems somehow to resist wind and rain just as long as the bird needs it.

Did you ever try to make a nest yourself? If not, sometime take apart a discarded nest--even the simplest in structure--and try to put it together again. Use no string or cord, but fasten it to a crotch, put some marbles in it and visit it after the first storm. After you have picked up all the marbles from the ground you will appreciate more highly the skill which a bird shows in the construction of its home. Whether a bird excavates its nest in earth or wood, or weaves or plasters it, the work is all done by means of two straight pieces of horn--the bill.

There is, however, one useful substance which aids the bird--the saliva which is formed in the mucous glands of the mouth. Of course the first and natural function of this fluid is to soften the food before it passes into the crop; but in those birds which make their nests by weaving together pieces of twig, it must be of great assistance in softening the wood and thus enabling the bird readily to bend the twigs into any required position. Thus the catbird and rose-breasted grosbeak weave.

Given a hundred or more pieces of twigs, each an inch in length, even a bird would make but little progress in forming a cup-shaped nest, were it not that the sticky saliva provided cement strong and ready at hand. So the chimney swift finds no difficulty in forming and attaching her mosaic of twigs to a chimney, using only very short twigs which she breaks off with her feet while she is on the wing.

How wonderfully varied are the ways which birds adopt to conceal their nests. Some avoid suspicion by their audacity, building near a frequented path, in a spot which they would never be suspected of choosing. The hummingbird studs the outside of its nest with lichens, and the vireo drapes a cobweb curtain around her fairy cup. Few nests are more beautiful and at the same time more durable than a vireo's. I have seen the nests of three successive years in the same tree, all built, no doubt, by the same pair of birds, the nest of the past summer perfect in shape and quality, that of the preceding year threadbare, while the home which sheltered the brood of three summers ago is a mere flattened skeleton, reminding one of the ribs and stern post of a wrecked boat long pounded by the waves.

The subject of nests has been sadly neglected by naturalists, most of whom have been chiefly interested in the owners or the contents; but when the whys and wherefores of the homes of birds are made plain we shall know far more concerning the little carpenters, weavers, masons, and basket-makers who hang our groves and decorate our shrubbery with their skill. When on our winter's walk we see a distorted, wind-torn, grass cup, think of the quartet of beautiful little creatures, now flying beneath some tropical sun, which owe their lives to the nest, and which, if they are spared, will surely return to the vicinity next summer.

That time of year thou may'st in me behold, When yellow leaves, or none, or few, do hang Upon those boughs which shake against the cold,-- Bare, ruin'd choirs, where late the sweet birds sang. SHAKESPEARE.

LESSONS FROM AN ENGLISH SPARROW

Many people say they love Nature, but as they have little time to go into the country they have to depend on books for most of their information concerning birds, flowers, and other forms of life. There is, however, no reason why one should not, even in the heart of a great city, begin to cultivate his powers of observation. Let us take, for example, the omnipresent English sparrow. Most of us probably know the difference between the male and female English sparrows, but I venture to say that not one in ten persons could give a satisfactory description of the colours of either. How much we look and how little we really see!

Little can be said in favour of the English sparrows' disposition, but let us not blame them for their unfortunate increase in numbers. Man brought them from England, where they are kept in check by Nature's wise laws. These birds were deliberately introduced where Nature was not prepared for them.

When we put aside prejudice we can see that the male bird, especially when in his bright spring colours, is really very attractive, with his ashy gray head, his back streaked with black and bay, the white bar on his wings and the jet black chin and throat contrasting strongly with the uniformly light-coloured under parts. If this were a rare bird the "black-throated sparrow" would enjoy his share of admiration.

It is wonderful how he can adapt himself to new conditions, nesting anywhere and everywhere, and this very adaptation is a sign of a very high order of intelligence. He has, however, many characteristics which tell us of his former life. A few of the habits of this bird may be misleading. His thick, conical bill is made for crushing seeds, but he now feeds on so many different substances that its original use, as shown by its shape, is obscured. If there were such a thing as vaudeville among birds, the common sparrow would be a star imitator. He clings to the bark of trees and picks out grubs, supporting himself with his tail like a woodpecker; he launches out into the air, taking insects on the wing like a flycatcher; he clings like a chickadee to the under side of twigs, or hovers in front of a heap of insect eggs, presenting a feeble imitation of a hummingbird. These modes of feeding represent many different families of birds.

Although his straw and feather nests are shapeless affairs, and he often feeds on garbage, all æsthetic feeling is not lost, as we see when he swells out his black throat and white cravat, spreads tail and wing and beseeches his lady-love to admire him. Thus he woos her as long as he is alone, but when several other eager suitors arrive, his patience gives out, and the courting turns into a football game. Rough and tumble is the word, but somehow in the midst of it all, her highness manages to make her mind known and off she flies with the lucky one. Thus we have represented, in the English sparrows, the two extremes of courtship among birds.

It is worth noting that the male alone is ornamented, the colours of the female being much plainer. This dates from a time when it was necessary for the female to be concealed while sitting on the eggs. The young of both sexes are coloured like their mother, the young males not acquiring the black gorget until perfectly able to take care of themselves. About the plumage there are some interesting facts. The young bird moults twice before the first winter. The second moult brings out the mark on the throat, but it is rusty now, not black in colour; his cravat is grayish and the wing bar ashy. In the spring, however, a noticeable change takes place, but neither by the moulting nor the coming in of plumage. The shaded edges of the feathers become brittle and break off, bringing out the true colours and making them clear and brilliant. The waistcoat is brushed until it is black and glossy, the cravat becomes immaculate, and the wristband or wing bar clears up until it is pure white.

The homes of these sparrows are generally composed of a great mass of straw and feathers, with the nest in the centre; but the spotted eggs, perhaps, show that these birds once built open nests, the dots and marks on the eggs being of use in concealing their conspicuous white ground. Something seems already to have hinted to Nature that this protection is no longer necessary, and we often find eggs almost white, like those of woodpeckers and owls, which nest in dark places.

We have all heard of birds flocking together for some mutual benefit--the crows, for instance, which travel every winter day across country to favourite "roosts." In the heart of a city we can often study this same phenomenon of birds gathering together in great flocks. In New York City, on One Hundred and Twenty-fifth Street, there stands a tree--a solitary reminder of the forest which once covered all this paved land. To this, all winter long, the sparrows begin to flock about four or five o'clock in the afternoon. They come singly and in twos and threes until the bare limbs are black with them and there seems not room for another bird; but still they come, each new arrival diving into the mass of birds and causing a local commotion. By seven o'clock there are hundreds of English sparrows perching in this one tree. At daylight they are off again, whirring away by scores, and in a few minutes the tree is silent and empty. The same habit is to be seen in many other cities and towns, for thus the birds gain mutual warmth.

Nature will do her best to diminish the number of sparrows and to regain the balance, but to do this the sparrow must be brought face to face with as many dangers as our wild birds, and although, owing to the sparrows' fearlessness of man, this may never happen, yet at least the colour protections and other former safeguards are slowly being eliminated. On almost every street we may see albino or partly albino birds, such as those with white tails or wings. White birds exist in a wild state only from some adaptation to their surroundings. A bird which is white simply because its need of protection has temporarily ceased, would become the prey of the first stray hawk which crossed its path. We cannot hope to exterminate the English sparrow even by the most wholesale slaughter, but if some species of small hawk or butcher bird could ever become as fearless an inhabitant of our cities as these birds, their reduction to reasonable numbers would be a matter of only a few months.

So dainty in plumage and hue, A study in gray and brown, How little, how little we knew The pest he would prove to the town!

From dawn until daylight grows dim, Perpetual chatter and scold. No winter migration for him, Not even afraid of the cold!

Scarce a song-bird he fails to molest, Belligerent, meddlesome thing! Wherever he goes as a guest He is sure to remain as a King. Mary Isabella Forsyth.

THE PERSONALITY OF TREES

How many of us think of trees almost as we do of the rocks and stones about us,--as all but inanimate objects, standing in the same relation to our earth as does the furry covering of an animal to its owner. The simile might be carried out more in detail, the forests protecting the continents from drought and flood, even as the coat of fur protects its owner from extremes of heat and cold.

When we come to consider the tree as a living individual, a form of life contemporaneous with our own, and to realise that it has its birth and death, its struggles for life and its periods of peace and abundance, we will soon feel for it a keener sympathy and interest and withal a veneration greater than it has ever aroused in us before.