Chapter VI: Preface (6)
The eagle is a bird that deserves much sympathy, for he has seen better times. Until a few years ago the pride of place among the fowls of the air was always given to the eagle. “Which eagle?” you ask. I reply, “_The_ eagle.” The poets, who have ever been the bird’s trumpeters, know but one eagle upon which they lavish such epithets as “the imperial bird,” “the royal eagle,” “the monarch bird,” “lord of land and sea,” “the wide-ruling eagle,” “the prince of all the feathered kind,” “the king of birds,” “the bird of heaven,” “the Olympic eagle,” “the bold imperial bird of Jove,” and so on, _ad nauseam_.
The eagle of the poets was truly regal. But somebody discovered, one day, that this bird is, like the phœnix, a mythical creature. Eagles do exist—many species of them—but they are very ordinary creatures, in no way answering to the description of the poet’s pet fowl. This, of course, is not the fault of the eagles. They are not to blame because the bards have, with one accord, combined to idealise them. Nevertheless, men, now that they have found out the truth, seem to bear a grudge against the eagle. They are not content with dethroning him, they must needs throw mud at him. It is the present custom to vilify the eagle, to speak of him as though he were an opponent at an election, to dub him a cowardly carrion feeder, little if anything better than a common vulture. Let us, therefore, give the poor out-at-elbows bird an innings to-day and see what we can do for him.
But how are we to recognise him when we see him? This is indeed a problem. There is a feature by which the true eagles may be distinguished from all other birds of prey, namely, the feathered tarsus. The true eagles alone among the _raptores_ decline to go about with bare legs; their “understandings” are feathered right down to the toe. Thus may they be recognised.
This method of identification is on a par with that of catching a bird by placing a small quantity of salt upon its tail. Eagles show no readiness to come and have their legs inspected. There is, I fear, no feature whereby the tyro can distinguish an eagle as it soars overhead high in the heavens. Nothing save years of patient observation can enable the naturalist to identify any particular bird of prey at sight. Colour is, alas! no guide. The _raptores_ are continually changing their plumage. It were as easy to identify a woman by the colour of her frock as a bird of prey by the hues of its plumage. We read of one eagle that it is tawny rufous, of another that it is rufous tawny, of a third that it is tawny buff. The surest method of distinguishing the various birds of prey is by their flight; but is it possible to describe the peculiar flap of the wings of one eagle, and the particular angle at which another carries its pinions as it sails along? The length of the tail is a guide, but by no means an infallible one. The shikra, the sparrow-hawk, the kestrel, and the kite are long-tailed birds, the caudal appendage accounting for half their total length. In the eagles the tail is considerably shorter in proportion to the size of the bird. Thus the female of the golden eagle (_Aquila chrysætus_)—which, _en passant_, is not gold in colour, but dirty whitish brown—is 40 inches long, while the tail is but 14 inches. The vultures have yet shorter tails in proportion to their size. If, therefore, you see soaring overhead a big bird of prey, looking like a large kite, with a moderate tail and curved rather than straight wings, that bird is probably an eagle. So much, then, for the appearance of our dethroned monarch; it now behoves us to consider his character and habits. There are many species of eagle, each of which has its own peculiar ways, hence it is impossible for the naturalist to generalise concerning them. In this respect he is not so fortunate as the poet. Let us briefly consider two species, one belonging to the finer type of eagle and the other to the baser sort.
Bonelli’s eagle (_Hieraëtus fasciatus_), or the crestless hawk eagle as Jerdon calls him, is perhaps the nearest approach of any to the poet’s eagle. This fine bird is common on the Nilgiris, but rare in Madras. It is said to disdain carrion; it preys on small mammals and birds of all sizes. It takes game birds by preference, but when hungry does not draw the line at the crow. If it has hunted all day without obtaining the wherewithal to fill its belly, it repairs to the grove of trees in which all the crows of the neighbourhood roost. As the sun sinks in the heavens the crows arrive in straggling flocks. Suddenly the eagle dashes into the midst of them and, before the crows have realised what has happened, one of them is being carried away in the eagle’s talons. Then the _corvi_ fill the welkin with their cries of distress. It is very naughty of the eagle to prey upon crows in this way, because by so doing it mocks the theory of protective colouration. No one can maintain that our friend _Corvus splendens_ is protectively coloured, that is to say, so coloured as to be inconspicuous. No one but a blind man can fail to see a crow as he steadily flaps his way through the air. No one can deny that the bird flourishes, in spite of the fact that eagles eat him, and that his plumage is as conspicuous as the blazer of the Lady Margaret Boat Club at Cambridge. If, as the theory teaches, it is of paramount importance to a bird to be inconspicuous, why was not the whole clan of _corvi_ swept off the face of the earth long ago?
We have, in conclusion, to consider an eagle of the baser sort. The Indian tawny eagle (_Aquila vindhiana_), which is the commonest eagle in India, will serve as an example. This bird eats anything in the way of flesh that it can obtain. If the opportunity offers, it will pounce upon a squirrel, a small bird, a lizard, or a frog; but it is a comparatively sluggish creature, and so robs other _raptores_ in preference to catching its own quarry. Most birds of prey are robbers. This the falconer knows, and profits by his knowledge. He first captures some small bird of prey, such as a white-eyed buzzard. Having tied up two or three of its wing feathers so that it cannot fly far, he attaches to its feet a bundle of feathers, from which hang a number of fine hair nooses. He then flies this lure bird. Every bird of prey in the neighbourhood espies it and, seeing the bundle of feathers and remarking the laboured flight, jumps to the conclusion that it is carrying booty, and promptly gives chase with the object of relieving it of its burden. The first robber to arrive is caught in one of the nooses.
The tawny eagle is not above feeding upon carrion. It has not the pluck of Bonelli’s eagle, but is apparently not the contemptible coward it is made out to be by some writers. A few weeks ago I noticed, high up in a _farash_ tree, the platform of sticks and branches that does duty for the nest of this species. I sent my climber to find out what was in the nest. While he was handling the two eggs it contained, the mother eagle swooped down upon him, scratched his head severely, and flew off with his turban. As she sped away, her prize attracted the notice of some kites, who at once attacked her. In the _mêlée_ which ensued, the _puggaree_ dropped to the ground, to the joy of its lawful owner and the disgust of the combatants. I must add that I was not an eye-witness of the encounter; I however saw the marks of the bird’s claws on my climber’s scalp.
BIRDS IN THE RAIN
There are occasions when one is tempted to wish that one were a bird, for the fowls of the air are spared many of the troubles which we poor terrestrial creatures have to endure.
Most of us in India have received a telegram ordering us off to some far-away station; then, when distracted by the worry and bustle of packing; when the hideous noises of the Indian railway station “get on the nerves”; as we sit in the dusty, jolting train, we begin to envy the birds who are able to annihilate distance, who have no boxes to pack up, no baggage to go astray, no bills to pay, no _chits_ to write, no cards to leave, no time-table to worry through, no trains to lose, no connections to miss, but have simply to take to their wings and away.
Most of us, again, have been caught in the rain. As the watery contents of the clouds slowly but surely percolated through our clothes, as our boots grew heavier and heavier until the water oozed out at every step, we must have envied the birds. They know naught of rheumatism or ague. Their clothes do not spoil in the rain. They wear no boots to become waterlogged. Their wings rarely become heavy or sodden. For them the rain is a huge joke. They enjoy the falling rain-drops as keenly as a man enjoys his morning shower-bath. There is no bath like the rain bath, and if the drops do fall very heavily there is always shelter to be taken.
It is of course possible for birds to have too much rain; but this does not often happen in India, except occasionally in the monsoon.
As I write this it is pouring “cats and dogs,” and sitting in a tree not five yards away from the window are a couple of crows thoroughly enjoying the blessings which Jupiter Pluvius is showering down upon them. I am high up, seventy or eighty feet above the level of the ground, and can therefore look down upon the crows. They are perched on the ends of the highest branches, determined not to miss a drop of the rain. One of them is not quite satisfied with his position; he espies another bough which seems more exposed, so to this branch he flies, although it is so slender that it can scarce support him. Nevertheless he hangs on to his swaying perch and opens out his wings and flaps his tail—does, in fact, everything in his power to make the most of the passing tropical shower. The other crow has caught sight of me, and thinks he will stare me out, so sits motionless with his eye fixed on mine, while the rain pours upon him and falls off his tail in a little waterfall. Occasionally he gives his friend an answering “squawk,” and then shakes his feathers, and is altogether enjoying himself; he is as jolly as the proverbial sandboy. In other trees near by sit more crows, and, so far as one can judge, each seems to have taken up a position in which he is likely to secure the maximum of rain. All round there is ample shelter; there are numerous ledges, outhouses, and verandahs, in any of which the crows could obtain shelter if they desired it. Shelter? Not a bit of it, they revel in the rain.
Two pied wagtails fly by, chasing one another gleefully in the pouring rain; they too are regular “wet bobs.”
On the telegraph wires hard by the king-crows sit with their tails projecting horizontally so as to catch as much of the downpour as possible. The dragon-flies are seeking their prey regardless of the rain; this is somewhat surprising, when we consider that to them a drop of rain must bear about the same relation as a glass of water does to a human being. As they are hunting, it is obvious that the minute creatures on which they feed must also be out in the rain, although every drop contains quite sufficient water in which to drown them.
The mortality of small insects in a heavy fall of rain must be enormous. What a strange sight a shower must look to an insect! Each drop must seem like a waterspout.
Are tiny insects aware that the falling drops are fraught with danger to them? Do they attempt to dodge them? I think not. They can know nothing of death or of the danger of drowning. They probably fly about as usual in the rain in blissful ignorance of the harm that threatens them. Some escape unscathed, but others less fortunate are overwhelmed as in a flood, and in a few minutes their little spark of life is extinguished.
But to return to the birds. They are all making the most of the downpour, ruffling their feathers so that the water shall penetrate to the skin.
But the rain is more to the birds than a very pleasant form of bath. It is for them a _mi-carême_, a water carnival, an hour of licence when every bird—even the oldest and most staid—may throw appearances to the wind, when it is “quite the thing” to look dishevelled.
What a transformation does a shower of rain effect in the myna. As a rule the bird looks as smart as a lifeguardsman; its uniform is so spick and span that the veriest martinet could find no fault with it. But after the rain has been falling for ten minutes the myna looks as disreputable as a babbler. A shower is the signal for all the birds to let themselves go and have a spree. No bird then minds how untidy it is, for it knows that there is none to point the finger of scorn at it; all are in the same boat, or, at any rate, in the same shower of rain. So each one makes the most of the period of licence. The most staid birds splash about in puddles and revel in the experience in much the same way as a child enjoys paddling on the seashore.
And when the rain is over, what a shaking and preening of feathers there is! What a general brushing up! The bird world seems for a time to have turned itself into a toilet club. Presently, the last arcana of the toilet being completed, the birds come forth looking as fresh and sweet as an English meadow when the sun shines upon it after a summer shower.
Then there are all the good things which the rain brings with it. How luscious and sweet the fruit must taste when the raindrops have washed away all the dust and other impurities with defile it. What a multitude of edible creeping things does a shower bring forth. In England it causes to emerge all manner of grubs and worms which before had been lurking in their burrows. In India is it not the rain that ushers in the red-letter day for insectivorous birds—the day that witnesses the swarming of the “white ants”? What a feast do these myriads of termites provide for the feathered things. In addition to these there is all the multitude of winged and crawling insects which the rain brings to life as if by magic. How badly would the birds fare but for the _barsath_ which brings forth these insects, upon which they are able to feed their young.
Perhaps the hoopoes most of all appreciate the rain, for it makes the ground so delightfully soft; they are then able with such ease to plunge their long beaks into the earth and extract all manner of hidden treasures which are usually most difficult of access.
Is there anything in the world more complete than the happiness of birds in a shower of rain?
THE WEAVER BIRD
The weaver bird has, thanks to its marvellous nest, a world-wide reputation. It is related to our ubiquitous friend the house sparrow, and is known to men of science as _Ploceus baya_.
Except at the breeding season, the weaver bird looks rather like an overgrown sparrow, and frequently passes as such. But the cock decks himself out in gay attire when he goes a-courting. The feathers of his head become golden, while his breast turns bright yellow if he be an elderly gentleman, or rusty red if he still possess the fire of youth.
Weaver birds are found all over India. In most parts they seem to shun the haunts of man, but in Burma they frequent gardens. Jerdon mentions a house in Rangoon which had at one time over one hundred weaver birds’ nests suspended from the thatch of the roof! In India proper the favourite site for a nest is a tree that overhangs water. Toddy palms are most commonly chosen, but in Northern India, where palms are but rarely seen, a _babul_ tree is usually utilised.
Weaver birds or bayas, as they are invariably called by Hindustani-speaking people, live almost exclusively on grain, hence they are easy birds to keep in captivity. Given a commodious aviary and plenty of grass, captive bayas amuse themselves by weaving their wonderful nests. They are, however, not very desirable as pets if they have to share a cage with other birds, for, as Colonel Cunningham remarks, “every weaver bird appears to be possessed by an innate desire to hammer in the head of his neighbour.” To this the neighbour is apt to take exception, so that unpleasantness ensues.
Natives frequently train bayas to do all manner of tricks.
The man with performing birds is quite an institution in India. Parrots, bayas, and pigeons are most frequently trained.
A very effective trick, which is performed alike by parrots and weaver birds, is the loading and firing of a miniature cannon. First the bird places some grains of powder in the muzzle of the cannon, then it rams these home with a ramrod. It next takes a lighted match from its master, which it applies to the touch-hole. The result is a report loud enough to scare every crow in the neighbourhood, but the little baya will remain perched on the gun, having apparently thoroughly enjoyed the performance.
The nest of the baya is one of the most wonderful things in nature. Description is unnecessary. Every one who has been in India has seen dozens of the hanging flask-shaped structures, while those who know not the Gorgeous East must be acquainted with the nest from pictures.
On account of its champagne-bottle shaped nest, the weaver is sometimes known as the bottle bird; I have also heard it called the hedge sparrow.
It makes no attempt to conceal its exquisitely woven nest. It relies for protection on inaccessibility, not concealment. Every animal _badmash_ can see the nest, but cannot get at it. It hangs sufficiently high to be out of reach of all four-footed creatures. The ends of the entrance passage are frayed out so as to baffle all attempts on the part of squirrels and lizards to reach the treasures hidden away in it.
Both cock and hen work at the nest, the cock being the more industrious. The fibres of which it is composed are not found ready-made. The birds manufacture them out of the tall elephant grass which is so common in India. The weaver alights on one of the nearly upright blades and seizes with its beak a neighbouring blade near the base and makes a notch in it; it next seizes the edge of the blade above the notch and jerks its head away. By this means it strips off a thin strand of the leaf; it then proceeds to tear off in a similar manner a second strand, retaining the first one in its beak; in precisely the same way a third and perhaps a fourth strand are stripped off. The tearing process is not always continued to the extreme end of the blade; the various strands sometimes remain attached to the tip of the blade. The force with which the bird flies away usually suffices to complete the severance; sometimes, however, it is not effected so easily, and the bird is pulled back and swings in the air suspended by the strands it holds in its bill. Nothing daunted, the weaver makes a second attempt to fly away, and if this is not successful, continues until its efforts are crowned with success.
The grass which is used in nest construction is impregnated with silicon to such an extent that I experienced considerable difficulty in extricating from my pocket some of the fibres which, on one occasion, I took home with me. The material is thus eminently suitable for weaving purposes.
The fibres first collected are securely wound round the branch or leaf from which the nest will hang. The fibres added subsequently are plaited together until a stalk four or five inches long is formed; this is then expanded into a bell-shaped structure. The bell constitutes the roof of the nursery. When the roof is completed a loop is constructed across its base, so that the nest at this stage may be likened to an inverted basket with a handle.
Up to this point the cock and hen do the same kind of work, both fetch strips of grass or of palm leaves and weave these into the structure of the nest. But when once the loop or cross-bar is completed the hen takes up a position on it and makes the cock do all the bringing of material. She henceforth works from the interior of the nest and he from the exterior.
They push the fibres through the walls to one another. Thus the work progresses very rapidly. On one side of the loop the bell is closed up so as to form a chamber in which the eggs are laid, and the other half is prolonged into a neck, which becomes the entrance to the nest. This may be nearly a foot long; six inches is, however, a more usual length.
The entrance to the nursery is thus from below. The way the owners shoot vertically upwards into it, with closed wings, without perceptibly shaking it is really marvellous.
Nest construction obviously gives the little builders great pleasure. They frequently build supernumerary nests, purely from the joy of building. Each time the cock bird approaches the nest with a beakful of material he cries out with delight. Every now and again in the midst of weaving material into the structure of the nest he bursts into song.
Weaver birds usually build in company; ten or a dozen different nests being found in the same tree. As each little craftsman is in a very excited state, fights between neighbouring cocks frequently ensue, but these are never of a serious nature. I was once the witness of an amusing piece of wickedness on the part of a cock baya. The bird in question flew to a branch near the nest belonging to another pair of weaver birds who were absent. After contemplating it for a little he flew to the nest, and having deliberately wrenched away a piece of it with his beak, made off with the stolen property and worked it into his own nest! Four times did he visit his neighbour’s nest and commit larceny; two of the stolen strands he utilised and the remaining ones fell to the ground. I am inclined to think that the thief was actuated by motives of jealousy; for he deliberately dropped some of the stolen material on to the ground and extracted it from the place at which the nest was attached to its branch, thus weakening its attachment. The victim of the outrage on his return did not appear to notice that anything was amiss.
Not the least interesting feature of the nest is the clay which is studded about it in lumps. In one nest Jerdon found no fewer than six of these lumps, weighing in all three ounces. The clay has, I think, three uses: it helps to balance the nest, it prevents it being blown about by every gust of wind, and keeps it steady while the bird is entering it.
A story is abroad, and is repeated in nearly every popular book on ornithology, to the effect that the weaver bird sticks fireflies on these lumps of clay, and thus illuminates the nursery, or renders it terrifying to predacious creatures. Jerdon scoffs at this firefly story, and I, too, am unable to accept it. Nevertheless it is so universally believed by the natives of India that there must be some foundation for it.
Some time ago a correspondent living on the West Coast of India informed me that weaver birds are very abundant in that part of the country, that their nests are everywhere to be seen, and that he had noticed fireflies stuck into many of them. He asked if I could explain their presence. I suggested in reply that he had made a mistake and requested him to look carefully next nesting season, that is to say in August, and, if he came upon a single nest on to which a firefly was stuck, to take it down, fireflies and all, and send it to me at my expense. Since then August has come and gone thrice, and I have heard nothing from my correspondent! Thus it is that I am still among those that disbelieve the firefly story.
My theory is that the bird brings the clay to the nest in its bill in a moist condition. Now wet clay retains moisture for some time and would shine quite brightly in the moonlight, so might easily be mistaken for a firefly. Unfortunately the weaver bird is not common where I am now stationed, so that I have not had an opportunity of putting this theory to the test. I have, however, noticed how the nests built by solitary wasps shine when the clay that composes them is wet.
The natives of Northern India attribute great medicinal value to the nest of the weaver bird. They assert that a baby will never suffer from boils if it be once washed in water in which a weaver bird’s nest has been boiled!
A great many half-finished weaver birds’ nests are seen in India. Most of these are the work of the cock, who thus amuses himself while his wife is incubating. A few are nests which have gone wrong, nests which do not balance nicely and so have not been completed.
Two eggs are usually laid; they are pure white and without any gloss. On these the hen sits very closely. On one occasion Hume took home a very fine specimen of the nest and hung it from one of a pair of antlers on his dining-room wall. Three days later the inmates of the bungalow became aware of a very unpleasant odour, which was traced to the nest. On taking it down it was found to contain a female baya dead upon two dead half-hatched chicks.
GREEN PARROTS
Green parrots, as the long-tailed paroquets of India are popularly called, although fairly abundant during the cold weather, cannot be said to be common birds in Madras. This is a small mercy, for which all Madrassis should be duly thankful. The green parrot is one of those good things of which it is possible to have too much. Where the beautiful birds are not too plentiful they are always greatly admired and considered most pleasing additions to the landscape; where they abound most people find it difficult to speak of them in parliamentary language.
The Punjab is the happy hunting-ground of green parrots. I am now in a station where these birds probably outnumber the crows, where we are literally steeped in green parrots, where we hear nothing else all day long save their screeches and chuckles.
Green parrots owe their unpopularity to their mischievousness and their noisiness. “In their malignant love of destruction and mischief,” writes Colonel Cunningham, “they run crows very hard, and seem only to fall short of that standard through the happy ordinance that their mental development has halted a good way behind that of their rivals. They are, therefore, incapable of devising such manifold and elaborate schemes of mischief as the crows work out, but in so far as intent and disinterested love of evil goes, there is not a pin to choose between them. They take the same heart-whole delight in destruction for destruction’s sake, and find the same bliss in tormenting and annoying other living things.” While fully endorsing the above, I feel constrained to remark that the parrot is no fool; he may not be quite as ’cute as an Indian crow, but he is gifted with sufficient brain-power for all practical purposes. If the green parrot is less harmfully mischievous than the crow he is far more offensively noisy. He is able to produce an almost endless variety of sounds, but unfortunately there is not a single one among them all which by any stretch of the imagination can be called musical.
All species of green parrots have similar habits. All are gregarious and feed almost exclusively on fruit and seeds. They do much damage to the crops, destroying more than they eat, since they have a way of breaking off a head of corn, eating a few grains, and then attacking another head. Where green parrots are plentiful the long-suffering _ryot_ sets them down among the ills to which the flesh is heir. When the crops are cut the parrots feed among the stubble, picking up the fallen grain.
The exceedingly swift, arrow-like flight of the green parrot is too familiar to need description. The flocks usually fly high up, screaming loudly; at times, however, they skim along the ground; occasionally they thread their way among trees, avoiding the branches in the most wonderful manner, considering the pace at which they move.
Very amusing it is to watch a little company of parrots in a tree. Sometimes the birds perch on the topmost branches and there chuckle to one another; at others they cling to the trunk, looking very comic, pressed up against the bark with tails outspread. Not infrequently one sees two of them sitting together in a tree indulging in a little mild flirtation, which, in green parrot communities, takes the form of head tickling. These birds are very skilled climbers; they move along the branches foot over foot, using the beak when they have to negotiate a difficult pass. Thus they clamber about, robbing the tree of its fruit and keeping up a running conversation. Suddenly the flock will take to its wings and fly off, screeching boisterously. The members of each little community seem to live in a state of rowdy good-fellowship. No one who watches parrots in a state of nature can doubt that existence affords them plenty of pleasure.
Green parrots nest in January or February in Southern India, and somewhat later in the North. The courtship of the rose-ringed species is thus described by Captain Hutton: “At the pairing season the female becomes the most affected creature possible, twisting herself into all sorts of ridiculous postures, apparently to attract the notice of her sweetheart, and uttering a low twittering note the while, in the most approved style of flirtation, while her wings are half spread and her head kept rolling from side to side in demi-gyrations; the male sitting quietly by her side, looking on with wonder as if fairly taken aback—and wondering to see her make such a guy of herself. I have watched them during these courtships until I have felt humiliated at seeing how closely the follies of mankind resembled those of the brute creation. The only return the male made to these antics was scratching the top of her head with the point of his beak, and joining his bill to hers in a loving kiss.”
Note that it is the hen that makes the advances. There can be no mistake about this, for the presence of the rose-coloured ring round the neck enables us to distinguish at a glance the cock from the hen.
The more I see of birds the more convinced do I become that, in the matter of selecting mates, the hens do not have things all their own way. In monogamous species the cock frequently chooses his spouse; selection is mutual.
The nest is a cavity in a tree, and is thus described by Hume: “The mouth of the hole, which is circular and very neatly cut and, say, two inches on the average in diameter, is sometimes in the trunk, sometimes in some large bough, and not unfrequently in the lower surface of the latter. It generally goes straight in for two to four inches, and then turns downwards for from six inches to three feet. The lower or chamber portion of the hole is never less than four or five inches in diameter, and is often a large natural hollow, three or four times these dimensions, into which the bird has cut its usual neat passage.”
My experience differs from that of Hume, inasmuch as it tends to show that green parrots do not excavate their own holes, or even the entrances to them. I suppose I have seen over a hundred green parrots’ nests, and all have been in existing hollows. Green parrots frequently evict the squirrels which tenant a cavity in a tree and use it for nesting purposes.
They sometimes nest in holes in buildings. There is in Lahore an old half-ruined gateway, known as the _Chauburgi_. In this dozens of green parrots nest simultaneously.
The rose-ringed paroquet (_Palæornis torquatus_) seems usually to nest in trees, while the larger Alexandrine paroquet (_Palæornis nepalensis_) nests by preference in holes in buildings.
The nest hole is not lined.
Four white eggs are usually laid. Both parents take turns at incubation.
Parrots are birds which thrive remarkably well in captivity. This, I fear, is a doubtful blessing, for it leads to a vast number of the birds being taken prisoner. Many of those which are kept by natives, and even some kept by Europeans, are, I am afraid, cruelly treated. It is true that the cruelty is in many cases unintentional, but this does not afford the poor captive much consolation.
Parrot-catching is a profitable occupation in India; since nestlings fetch from four to eight annas each. Thousands of young birds are dragged out of their nurseries every year and sold in the bazaars.
Nor are the young birds immune from capture after they have left the nest. They roost for a few nights in company before dispersing themselves over the face of the country. The wily bird-catcher marks down one of these nesting spots—he has possibly had to pay rent for it, for parrot-catching is quite a profession, so large is the demand for captive birds—and then sets in likely places split pieces of bamboo smeared over with bird-lime. When daybreak comes the unlucky birds that have chanced to roost on the limed bamboos find that they cannot get away, that they are stuck to their perches!
Natives of India are very fond of taming parrots. They capture the birds at an age when they are unable to feed themselves. These young parrots are considered as members of the family, and are allowed to roam about at large in the room in which their master lives. They make a great noise and so are not very desirable pets.
I am sometimes asked by those who keep parrots how to make them talk. This is not an easy question to answer. Some birds are much more ready to learn than others. I do not consider that the various Indian species make such good talkers as some other kinds, as, for example, the West African parrot—the grey one with the red tail. Nevertheless, what follows applies indiscriminately to all species of parrot. If you want to make a bird learn quickly to talk, use plenty of bad language before it. It is really wonderful how rapidly a parrot will pick up swear words. There appears to be an incisiveness about them which appeals to parrot nature. As a rule it requires much patience to teach a parrot anything except profanity. Constant repetition of the same sound before the bird is necessary. The gramophone is said to make the best teacher. The instrument should be made to repeat slowly and steadily the phrase it is desired to teach the bird, and placed quite close to the parrot’s cage, which should be covered up. A word of warning to those who try this up-to-date method of instruction. Polly’s lesson should not last much longer than ten minutes, and only one a day be given; otherwise the poor bird may get brain fever.
THE ROOSTING OF THE SPARROWS
Most species of birds like to roost in companies, partly because it is safer to do so, partly for the sake of companionship, and sometimes, in England at any rate, because by crowding together they keep each other warm. Birds have their favourite roosting places. Certain trees are patronised while others are not. Perhaps one clump will be utilised every night for a month or longer, then a move will be made to another clump. Later on a return may be made to the original site. I do not know what determines these changes of locality.
The sunset hour is, I think, the most interesting at which to watch birds. They seem to be livelier then than at any other time of the day; they are certainly more loquacious. The dormitory of the crows, the mynas, or the green parrots is a perfect pandemonium. Whilst listening to the uproar one can only suppose each member of the colony to be bubbling over with animal spirits and intent on recounting to his fellows all the doings of the day.
Most people may be inclined to think that it is impossible to derive much pleasure from observing so common a bird as the sparrow. This is a mistake. Often and often have I watched with the greatest pleasure the roosting operations of this despised bird. I know of a row of bushes that forms the dormitory of hundreds of sparrows. To enable the reader to appreciate what follows, let me say that the hedge in question is only some twenty yards long, its height is not much greater than that of a man, it is nowhere more than eight feet in breadth, and is within a hundred yards of an inhabited bungalow. Less than six yards away from it is a well, fitted with a creaking Persian wheel, at which coolies are continually working.
If you happen to pass this hedge within an hour of sunset, you will hear issuing from it the dissonance of many sparrows’ voices. You stop to listen, and, as you wait, a flock of sparrows dives into the thicket. You look about to see whether any more are coming and observe nothing. Suddenly some specks appear in the air, as if spontaneously generated. In two seconds these are seen to be sparrows. Within half a minute of the time you first set eyes upon them they are already in the bushes. They are followed by another little flock of six or seven, and another and another. Flight after flight arrives in quick succession, each of which shoots into the roosting hedge. I use the word “shoot” advisedly, for no other term describes the speed at which they enter the bushes. Their flight, although so rapid, is not direct; it takes the form of a quavering zigzag. Some of the flocks do not immediately plunge into the bushes. They circle once, twice, thrice, or even oftener, before they betake themselves to their leafy dormitory. Sometimes part of a flight dive into the hedge immediately upon arrival, while the remainder circle round and then fling themselves into the bushes as though they were soldiers performing a well-practised manœuvre; the first bird to reach the bush entering at the nearest end, the next a little farther on, the third still farther, and so on, so that the last sparrow to arrive enters the hedge at the far end. Sometimes a flock perches for a time on a tree near by before entering the hedge. Those who have only noticed sparrows pottering about will scarcely be able to believe their eyes when they see the speed at which they approach the roosting place. For the moment they are transformed into dignified birds.
All this time those individuals already in the hedge are making a great noise. Their chitter, chitter, chitter never for a moment ceases or even diminishes in intensity. Once in the hedge, the sparrows do not readily leave it. There is much motion of the leaves and branches, and birds are continually popping out of one part of the bushes into another. It is thus evident that there is considerable fighting for places. If, while all this is going on, you walk up to part of the hedge and shake it, the birds disturbed will only fly a yard or two and at once settle elsewhere in the thicket.
Meanwhile the sun has nearly set; the coolies near by have ceased working and are kindling a fire within a couple of yards of the bushes. But the sparrows appear to ignore both them and their fire. Settling down for the night engrosses their whole attention.
As the sun touches the horizon the incoming flights of sparrows become fewer and fewer; and after the golden orb has disappeared only one or two belated stragglers arrive. Sparrows are early roosters. Something approaching three thousand of them are now perched in that small hedge, yet none are visible except those that pop in and out, when jockeyed out of positions they have taken up. But although only a few sparrows come in after the sun has set, it is not until fully fifteen minutes later that there is any appreciable abatement of the din. It then becomes more spasmodic; it ceases for half a second, to burst forth again with undiminished intensity.
Twenty minutes or so after sunset the clamour becomes suddenly less. It is now possible to discern individual voices. The noise grows rapidly feebler. It almost ceases, but again becomes louder. It then nearly stops a second time. Perhaps not more than twenty voices are heard. There is yet another outburst, but the twitterers are by now very sleepy. Suddenly there is perfect silence for a few seconds, then more feeble twittering, then another silence longer than the last.
It is not yet dark, there is still a bright glow in the western sky. The periods of silence grow more prolonged and the outbursts of twittering become more faint and of shorter duration.
It is now thirty-nine minutes after the sun has set and perfect stillness reigns. The birds must have all fallen asleep. But no! one wakeful fellow commences again. He soon subsides. It has grown so dark that you can no longer see the sparrow-hawk perched on a tree hard by. He took up his position there early in the evening, and will probably breakfast first thing to-morrow morning off sparrow!
You now softly approach the bushes until your face touches the branches. There are twenty or thirty sparrows roosting within fifteen inches of you. You cannot see any of them, but if you were to stretch forth your hand you could as likely as not catch hold of one. You disturb a branch and there is a rustling of a dozen pairs of wings, so close to you that your face is fanned by the wind they cause. You have disturbed some birds, but they are so sleepy that they move without uttering a twitter. You leave the bush and return an hour later. Perfect silence reigns. You may now go right up to the roosting hedge and talk without disturbing any of the three thousand birds. You may even strike a match without arousing one, so soundly do they sleep.
Those who wish to rid a locality of a superabundance of sparrows might well profit by the fact that the birds sleep so soundly in companies. Could anything be easier than to throw a large net over such a hedge and thus secure, at one fell blow, the whole colony?
THE GAY DECEIVER
The drongo cuckoo (_Surniculus lugubris_) is a bird of which I know practically nothing. I doubt whether I have ever seen it in the flesh. It is, of course, quite unnecessary to apologise for discoursing upon a subject of which one’s knowledge is admittedly _nil_. In this superficial age the most successful writers are those most ignorant of their subject. When you know only one or two facts it is quite easy to parade them properly, to set them forth to best advantage. They are so few and far between that there is no danger of their jostling one another or bewildering the reader. Then, if you are conversant only with one side of a question, you are able to lay down the law so forcibly, and the public likes having the law laid down for it, it does not mind how crude, how absurd, how impossible one’s sentiments are so long as one is cocksure of them and is not afraid to say so.
My lack of knowledge of the habits of the drongo cuckoo is, however, not my chief reason for desiring to write about it. I wish to discuss the bird because natural selectionists frequently cite it as bearing striking testimony to the truth of their theory, whereas it seems to me that it does just the opposite. _Surniculus lugubris_ is, so far as I am able to judge, an uncompromising opponent of those zoologists who pin their faith to the all-sufficiency of natural selection to account for evolution in the organic world.
The drongo cuckoo is as like the king-crow as one pea is to another. This bird, says Blanford, “is remarkable for its extraordinary resemblance in structure and colourisation to a drongo or king-crow (_Dicrurus_). The plumage is almost entirely black, and the tail forked owing to the lateral rectrices being turned outwards.” Blanford further declares that the bird, owing to its remarkable likeness to the king-crow, is apt to be overlooked.
This being so, it is quite unnecessary for me to describe the drongo cuckoo; it is the image of a king-crow. But stay, perhaps there are some who do not know this last bird by sight. Such should make its acquaintance. They will find it sitting on the next telegraph wire they pass—a sprightly black bird, much smaller than the crow (with which it has no connection), possessing a long, forked tail. Every now and again it makes little sallies into the air after the “circling gnat,” or anything else insectivorous that presents itself. When you see such a bird you may safely bet on its being a king-crow; the off-chance of its proving a drongo cuckoo may be neglected by all but the ultra-cautious.
Not much is known of the habits of this cuckoo; but what we do know shows that, sometimes, at any rate, it makes the king-crow act as its nursemaid. Mr. Davison saw two king-crows feeding a young _Surniculus_. The consequence is that every book on natural history trots out our friend the drongo cuckoo as an example of mimicry. The mimicry is, of course, unconscious: it is said to be the result of the action of natural selection.
King-crows are, as every one knows, exceedingly pugnacious birds; at the nesting season both cock and hen are little furies, who guard the nursery most carefully and will not allow a strange species to so much as perch in the tree in which it is placed.
It is thus obvious that the cuckoo who elects to victimise a king-crow is undertaking a “big thing,” yet this is what _Surniculus_ does. It accomplishes its aim by trickery; it becomes a gay deceiver, disguising itself like its dupe. Now I readily admit that the disguise may be of the utmost use to the _Surniculus_; I can well understand that natural selection will seize hold of the disguise when once it has been donned and possibly perfect it; but I cannot see how natural selection can have originated the disguise _as such_.
The drongo cuckoo may be called an ass in a lion’s skin, or a lion in an ass’s skin, whichever way one looks at things. When once the skin has been assumed natural selection may modify it so as better to fit the wearer; but more than this it cannot do.
I do not pretend to know the colour of the last common ancestor of all the cuckoos, but I do not believe that the colour was black. What, then, caused _Surniculus lugubris_ to become black and assume a king-crow-like tail?
A black feather or two, even if coupled with some lengthening of the tail, would in no way assist the cuckoo in placing its egg in the drongo’s nest. Suppose an ass were to borrow the caudal appendage of the king of the forest, pin it on behind him, and then advance among his fellows with loud brays, would any donkey of average intelligence be misled by the feeble attempt at disguise? I think not. Much less would a king-crow be deceived by a few black feathers in the plumage of a cuckoo.
I do not believe that natural selection has any direct connection with the nigritude of the drongo cuckoo. It is my opinion that, so far as the struggle for existence is concerned, it matters little to an animal what its colour be. Every creature has to be some colour: what that actual colour is must depend upon a great many factors; among these we may name the metabolic changes that go on inside the animal, its hereditary tendencies, sexual selection, and natural selection. Is it natural selection that has caused the king-crow to be black? I trow not.
The drongo is black because it is built that way; its tendency is to produce black feathers. Just as some men tend to put on flesh, so also some species of birds tend to grow black plumage. In the case of the king-crow sexual selection has possibly contributed to the bird’s nigritude. It is possible that black is a colour that appeals to king-crow ladies. “So neat, you know; a bird always looks well in black, and a forked tail gives him such an air of distinction.”
As the hen drongo is a bird capable of looking after herself, even when incubating, there is no necessity for her to be protectively coloured. As I have repeatedly declared, one ounce of good solid pugnacity is a better weapon in the struggle for existence than many pounds of protective colouration.
Again, in the case of king-crows nigritude may be an expression of vigour, the outward and visible sign of strength.
Let me make myself clear. Suppose that in a race of savages those that had fair hair were stronger, bolder, more prolific, and more pushing than the dark-haired men. Fair hair, in some inexplicable way, always accompanied strength and the like. It is obvious that, under these conditions, the race would in time become fair-haired: the milder dark men would eventually be hustled out of existence. Fair hair would then be the outward expression of vigour: it would not be the cause of vigour, merely the accompaniment of it; nor would it be a direct product of natural selection. In the same way it is possible that among drongos nigritude is in some manner correlated with vigour. This idea is not altogether fanciful. Are there not horses of “bad colour”? Are not white “socks” a sign of weakness? Is not roan a colour indicative of strength and endurance in a horse?
May not the blackness and the forked tail of the drongo cuckoo have arisen in the same way as they arose in the king-crow? In each case it may be an accompaniment of vigour, or it may be the result of sexual selection. Mrs. Surniculus may have had similar tastes to Mrs. Dicrurus, and, since cuckoos seem to be very plastic birds, her tastes have been gratified. As another example of this plasticity I may cite _Centropus phasianus_—a cuckoo which is a very fair imitation of a pheasant.
On this view the resemblance is a mere chance one. The cuckoo is not an ass in a lion’s skin, but an ass that looks very like a lion. His lion-like shape was not forced upon him by natural selection. A variety of causes probably contributed to it. It was not until the resemblance had arisen and become very striking that it was directly affected by natural selection.
I am far from saying that the above is a correct explanation of the nigritude: it is all pure hypothesis. Even if it be correct, we are really very little further than we were before towards an explanation of the colours and shape of either the king-crow or the drongo cuckoo.
Why did these birds tend to grow black feathers rather than red, green, or blue ones?
This is a question which “stumps” us all.
THE EMERALD MEROPS
Comments
Log in to leave a comment.
Birds of the PlainsChapter VI: Preface (6)
0%37 min left in chapter