Part 8

But enough of this foolery. The multiplication of species is really a very serious matter, for it is likely to deter sane persons from taking up the most delightful of studies. If the ornithological societies of every country in the world would combine to suppress the evil, it could easily be put down. But there is, I fear, no likelihood of such combination, because these societies are composed mostly of museum ornithologists, and it is too much to expect of these men that they will voluntarily suppress their chief enjoyment in life. To persuade them to act in this altruistic manner it will be necessary to offer them a quid pro quo. The only quid that suggests itself to me is to invite each of them to name a bird after himself. Let the name of every known species (I mean proper and indisputable species) be put in a hat and let each member draw one out. The bird he draws will henceforth be called after him. If any birds are left undrawn after every man has shed his name on one species, the remainder could be balloted for, and thus some lucky dogs would be able to give their name to two birds. When this is once done, it should be made an offence punishable with death to change the specific name of any feathered thing. Newly discovered birds and beasts could, as heretofore, be named after the happy discoverer. This proposal will, if adopted, cure the evil. My point is that it does not matter a jot what a bird be called; the important thing is to give it a fixed and immutable name, so that we poor field naturalists shall know where we are.

Written towards the end of 1906.

HONEYSUCKERS

Honeysuckers are birds that have adopted the manner of living of the butterfly, and a charming mode of life it is. To flit about in the sunshine and drink sweet draughts of the nectar that lies hidden away at the base of the petals of flowers is indeed an idyllic existence.

The sunbird, as the honeysucker is frequently called, is provided with a curved beak and a long tubular tongue to enable it the better to rob cup-like blossoms of their honey. The bird must perforce be very small and light, or it would find it impossible to reach the nectar of many flowers. As a matter of fact, it is almost as light as air, so is able to support itself on one flower when drinking honey from another. Sometimes, if no perch be available, the little honeysucker will hover in the air on rapidly vibrating wings and thus extract the sweets from a flower. In this attitude it looks very like a butterfly. I may here mention that sunbirds do not live exclusively upon honey: they vary this diet with minute insects which they pick off flowers and leaves.

Honeysuckers are frequently called humming-birds by Anglo-Indians. This is not correct. Humming-birds are confined to the New World, and are smaller and more ethereal than our little honeysuckers, but their methods of feeding are so similar that the mistake is a pardonable one.

As every one knows, butterflies and bees, in return for the honey they receive, render service to the flowers by carrying the pollen from the stamen of one to the stigma of the other and thus bring about cross-fertilisation, which most botanists believe to be essential to the well-being of a species. Honeysuckers probably perform a similar service, for, as they flit from flower to flower, their little heads may be seen to be well dusted with yellow pollen.

Sunbirds are found all over India, but they are most plentiful in the South, being essentially tropical birds; they are merely summer visitors to the Punjab; when the short, cold winter days come, they leave that province and betake themselves to some milder clime.

Three species may be seen in our Madras gardens—Loten’s, the purple, and the yellow honeysucker.

Of the cocks of the first and second species (Arachnechthra lotenia and A. asiatica) it may perhaps be said that they are clothed in purple and fine linen, for their plumage is a deep, rich purple with a sheen and a gloss like that on a brand-new silk hat. Sometimes the bird looks black, at others green, and more frequently mauve, according to the intensity of the light and the angle at which the sun’s rays fall upon it. It is not very easy to distinguish between these two sunbirds unless specimens are held in the hand, when the violet-black abdomen of the purple species can be easily distinguished from the snuff-brown lower parts of Loten’s. However, the latter has a much longer and stouter beak, and is very abundant in Madras, while the purple bird is comparatively rare, so that the Madrassi is fairly safe in setting down all the purple birds he sees as Loten’s honeysuckers. If, however, he espies a purple sunbird, with an unusually short bill, a bird that sings like a canary, he may be certain that that particular one is A. asiatica. If the cock Loten’s sunbird is clothed in purple and fine linen, that of the yellow species (A. zeylonica) may be said to be arrayed in a coat of many colours, each of which is so beautiful as to defy imitation by the painter. There is a patch on the crown which appears metallic lilac in some lights and emerald-green in others. His neck and upper back are dull crimson, the lower back, chin, and throat are brilliant metallic purple. The tail and wing feathers are dark brown. There is a maroon collar below the throat, and the plumage from this collar downwards is bright yellow. Verily, Solomon in all his glory was not arrayed like one of these.

The hens of all three species are homely-looking birds, difficult to distinguish one from the other. The upper plumage of each is dingy brown and the lower parts dull yellow. Many ornithologists declare that sexual dimorphism, such as is here displayed, is due to the greater need of the hen for protection when sitting on the eggs. These people allege that if the hens of brightly plumaged species were as showy as the cocks, they would be conspicuous objects when brooding, and so fall easy victims to birds of prey. This is a theory typical of the arm-chair naturalist, or of him who studies nature through the grimy panes of a museum window. Like all such theories, it is tempting at first sight, but is untenable because it fails to take cognisance of facts with which every field-naturalist should be acquainted. In the first place, birds of prey rarely attack stationary objects: they look out for moving quarry. Secondly, the cock of many species, such as the paradise flycatcher (Terpsiphone paradisi), although he is far more showy than the hen, sits on the eggs in the open nest quite as much as she does. In this case what is sauce for the goose is sauce for the gander; if she needs protective colouring, so does he. It is true that the cock sunbird never takes a turn on the nest; he is not a family man, but a gay young spark, who goes about bravely attired, with his hand upon the handle of his sword, ready to draw it upon the least provocation. A more pugnacious little bird does not exist. While the hen is laboriously building the wonderful little nest, he spends his time in drinking and revelry, with an occasional visit to the growing nursery to criticise its construction. Hence it might seem that, in the case of the sunbird, the above-mentioned explanation of the sexual dimorphism is the true one. Unfortunately, the nest is not an open one, but a little mango-shaped structure with an entrance at the side, so that the hen when sitting in it is not visible from above. In this case, therefore, as in so many others, we must seek a new explanation of this difference in the appearance of the cocks and hens.

The nest is in shape and size like a mango. It hangs down from the end of a branch, or any other convenient object. It is composed of dried grass, leaves, cocoons, bits of paper, and any kind of rubbish, held together by means of cobweb and some glutinous substance. There is an entrance at the side, over which is a little porch that serves to keep out rain and sun, but this porch is seen in every nest, even when the bird builds, as it very frequently does, in a verandah. A sunbird recently made its nest in the verandah of a friend of mine; the latter came to me and expressed his contempt for the intellect of the little architect, since she had been fool enough to construct a porch, although the nest was built under cover. He forgot that the building of nests is largely an instinctive act, that each bird builds on a fixed plan, learned by it in “the school of the woods.”

The nest is cosily lined with cotton down. No attempt is made to conceal it; nevertheless it frequently escapes the notice of human beings, because it does not look like a nest; one is apt to mistake it for a mass of dried grass and rubbish that has become caught in a branch. A sunbird in my compound completely covered her nest with the paper shavings that had once formed the packing for a tin of biscuits. The khansamah, when opening the tin, had, after the manner of his kind, pitched the shavings out of the window of the cook-house.

It is doubtful whether predacious creatures mistake the sunbird’s nest for a mass of rubbish; but it is so well placed that they cannot get at it. It is invariably situated sufficiently far above the ground to be out of reach of a four-legged animal; it hangs from an outstanding branch so that no crow or kite can get a foothold anywhere near it, and the squirrel who ventured to trust himself on to the nest would, I believe, look very foolish when attacked by the owners.

As is usually the case with birds that build covered nests, the hen is not at all shy. If her nursery happens to be in a verandah, she will sit in it with her head out of the window, and watch with interest the owners of the bungalow taking afternoon tea three feet below her.

A HEWER OF WOOD

Not the least of the many benefits which birds confer upon man is the unceasing warfare which the majority of them wage upon insects. Insects may be said to dominate the earth; they fill every nook and cranny of it, preying upon all other living things which they outnumber. If this is the state of affairs when hundreds of millions of insects are devoured daily by their arch-foes, the fowls of the air, what would it be were there no birds? The earth would certainly not be inhabited by men.

Most insectivorous birds specialise, that is to say, lay themselves out to catch a particular class of insect. Swifts, swallows, and flycatchers have developed phenomenal mastery over the air, so prey upon flying insects. Mynas, hoopoes, “blue jays,” magpie-robins, and others feed upon the hexapod hosts that crawl on the ground. Not a few birds confine their attention to the creeping things that inhabit the bark of trees. Such are the wryneck, the tree-creeper, and the woodpecker. Of these the woodpecker is chief. A mighty insect hunter is he, one who tracks down his quarry and drags him out of his lair. How must the insects which lie hidden away in the crevices of the bark tremble as they hear this feathered Nimrod battering at the walls of their citadel!

No bird is better adapted than the woodpecker to the work which nature has given him. He is a perfect hunting machine, constructed for work in trees. Note the ease with which he moves over the upright trunk. His sharp claws can obtain a foothold on almost any surface. I have seen a golden-backed woodpecker hunting insects on a smooth well-wheel!

His tail, which is short and composed of very stiff feathers, acts almost like a third leg. The bristle-like feathers stick in the crevices of the bark and enable the bird to maintain his position while he hammers away with might and main. His head is his hammer and his beak his chisel. The chisel is fixed rigidly in the hammer so that none of the force of the blow is lost. It is exhilarating to watch a woodpecker at work. He stands with his legs wide apart, the tip of his tail pressed firmly against the bark, and puts all he knows into each stroke, drawing his head back as far as it will go and then letting drive. The manner in which his strokes follow one another puts me in mind of the clever way in which workmen drive an iron bar into a macadamised road by raining upon it blows with sledge-hammers. Almost before the hammer of the first striker is off the head of the bar the second has struck it, this is immediately followed by the hammer of the third, then, without a pause, the first hammerer gets his second blow home, and so they continue until a halt is called. As a small boy I would stand for hours watching the operation. I am ashamed to do so now, so have to content myself with observing woodpeckers at work! There are few things more fascinating to watch than an operation in which skill and brute force are deftly combined.

Even more useful than the beak as a weapon is the woodpecker’s tongue. This is such an important organ that its owner is known in some parts of England as the tongue bird. It is so long that there is a special apparatus at the back of the bird’s head for stowing it away. Its surface is studded with backwardly pointing bristles and the whole covered with sticky saliva. When the woodpecker espies a crack in the bark it inserts into it the long ribbon-like tongue. To this the luckless insects stick and are ruthlessly dragged out to their doom.

The commonest woodpecker in India is the beautiful golden-backed species (Brachypternus aurantius). The head and crest of the cock are bright crimson, the upper back is a beautiful golden yellow, hence the popular name of the bird. The lower back and tail are black; the wing feathers are black and golden yellow, spotted with white, and the sides of the head show a white background on which there is a network of black lines and streaks.

The hen differs from the cock in having the top of the head black with small white triangular spots.

The golden-backed woodpecker is one of our noisiest birds. It constantly utters its loud screaming call, which is similar to that of the white-breasted kingfisher. Its flight, like that of most, if not all woodpeckers, is laborious and noisy, the whir of its wings being audible at a considerable distance. The bird gives one or two vigorous flaps of its wings and thus moves in an upward direction, then it sails and sinks; a few more flaps again send it upwards, and so it continues until it reaches the tree trunk for which it is bound.

I do not think that the woodpecker ever takes a sustained flight. It is seen at its best when on the stem of a tree, over which it moves with wonderful ease in a series of silent jerks, like a mechanical toy. It always keeps its head pointing heavenwards and hops or jerks itself upwards, downwards, or sideways, with equal ease, just as though it went by clockwork. It sometimes ventures on the ground, from which it digs out insects. On the earth it progresses in the same jerky manner.

I have never seen a woodpecker sitting like an ordinary bird on a perch. It is often seen on branches, but always lengthwise, never sitting across the branch. It can move along the under surface of a horizontal bough as easily as a fly walks on the ceiling.

I sometimes wonder how woodpeckers roost. Do they sleep hanging on to the trunk of some tree, do they sit lengthwise on a branch as a nightjar does, or do they repair to some hole? I should be inclined to favour the last of these alternatives but for the fact that woodpeckers seem to excavate a new nest every year. This would not be necessary if each bird had a hole in which it slept at night.

Sometimes the bird digs out the whole of its nest, but this is not usual. The woodpecker belongs to the “labouring classes,” and, true to the traditions of its caste, it is averse to work, so generally utilises a ready-made cavity. It taps away at tree after tree until it comes upon a place in a trunk that sounds hollow; it then proceeds to excavate a neat, round passage leading to this hollow. In this ready-made cavity it deposits its white eggs, not troubling to add any lining to the nesting chamber.