XXXIII INSECT HUNTERS

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Fly-Catchers, although they subsist almost entirely on insects, are by no means the only insectivorous creatures in existence. They merely form a considerable branch of the Noble Society of Insect Hunters.

If there exist any philosophers in the insect world they must find the uncertainty of life a fitting theme on which to lavish their philosophical rhetoric. Consider for a moment the precariousness of the life of an insect! There exist in India probably over three hundred species of birds which live almost exclusively upon an insect diet. Think of the mortality among insects caused by these birds alone, by the mynas, the swifts, the bee-eaters, the king crows, et hoc genus omne. Then there are insectivorous mammals, to say nothing of man who yearly destroys millions of injurious and parasitic hexapods. Fish too are very partial to insects, while for spiders, frogs, and lizards, life without insects would be impossible. Nor do the troubles of insects end here, they are preyed upon by their own kind, and, strange phenomenon, some plants entrap and destroy them. But we Anglo-Indians cannot afford to sympathise with the insects. In spite of the high mortality of the hexapod tribes, they flourish like the green bay-tree. So prolific are they that, notwithstanding the fact that millions are daily destroyed by their foes, the life of human beings in India becomes a burden on account of the creeping things. In the monsoon the insects tax man almost to the limits of his endurance—they teaze, bite, and worry his person, they destroy his worldly goods, and, not content with this, find their way into his food and drink. For this reason I feel very kindly disposed to the frogs, the lizards, and the fly-catching birds.

It is worth coming to India if only to see a frog or toad at work. Go at sunset, during a break in the rains, on to the chabutra, and place a lamp near you. Thousands of insects of all shapes and sizes are attracted by the light. In their wake come the toads. A toad always looks blasÉ. His stupid appearance and sluggish movements give him this air. Watch him as he hops into the zone of light. He advances to within an inch of a resting insect, and, before you can say “Jack Robinson,” the creature has flown into his mouth! The toad takes another hop, and a second insect follows the example of the first; then another and another! Have the insects all suddenly gone mad? Are they bewitched, mesmerised by the ugly face of the toad? Nothing of the kind. The insects have not jumped into the amphibian’s mouth at all. The toad has a long tongue attached at the front end to its mouth. This tongue is covered with sticky saliva and is capable of being protruded and retracted with lightning rapidity. In other words, the toad’s tongue is just a fly-paper, capable of the most perfect manipulation. The unsuspecting insect is resting, and hears not the silent approach of its enemy. Suddenly it is caught up by a great sticky tentacle, then comes oblivion. The toad’s tongue has shot forth and back again so quickly as to be imperceptible to the human eye.

The lizard obtains its food in a similar way. It enters the bungalow and lies up during the day behind a picture. As soon as the lamps are lighted it comes forth as hungry as the proverbial hunter. In a single night it devours hundreds of insects. I have watched a lizard feeding in this way until he had consumed so many insects that he could scarcely move: and doubtless he would have continued his gluttonous meal but for the fact that he had become as slow as Mark Twain’s jumping frog after it had partaken copiously of shot! The lizard cannot shoot out his tongue to the extent that the frog can, so he has to make a dash at each insect before swallowing, and, to his credit, it must be said that he rarely lets a victim escape him unless, of course, he has over-eaten himself.

Although I am very fond of the nimble little gecko, I must admit that he is an out-and-out glutton. Sometimes his gluttony leads him to try to capture quarry beyond his capacity. Let me relate an amusing little incident that I recently witnessed. The scene was my dressing-table, and the time 9 p.m. in the month of August; the day I forget. It matters not. A large stag-beetle was crawling laboriously across the dressing-table. Upon this table was an ordinary looking-glass, under which a lizard had taken up his habitation. From his point of view the position was a good one, for the lamp overhead attracted to the table a number of insects which the lizard could watch from under the base of the glass.

The lizard caught sight of the beetle and began to stalk it. Surely, I thought, the lizard will not try to devour that beetle, which is nearly half as big as himself; but, as he emerged from under the glass, I saw that he meant business. Slowly but surely he gained upon the slow-moving beetle. Having arrived close up behind it, he shot forth his sticky tongue. The next moment the beetle found itself lying on a spot eight inches from where it had a second before stood, and the lizard was trembling in his lair. The reptile had apparently expected to find the beetle as soft and luscious as a strawberry, so the instant his tongue felt the hard, chitinous integument of the beetle he drew that organ back pretty smartly. But his tongue was so sticky that the beetle stuck to it for a moment, and so was thrown backwards over the reptile’s head. The lizard was startled at what had happened, so instinctively took cover. The insect too was scared nearly out of its wits, and did what most frightened insects do, that is to say, retracted its legs and remained perfectly motionless. When, however, several minutes passed and nothing happened, the beetle grew bold, and putting forth its legs, began again to crawl on its way. Directly it moved the lizard put himself on the qui vive, and even went so far as again to follow it, but, profiting by his recent experience, did not attempt a second time to swallow it. Thus the beetle passed off the stage.

Seeing that this particular lizard was not over sharp, I determined to play a little practical joke upon it. Taking a piece of black worsted, I rolled it up into a ball about the size of a fine, strapping blue-bottle fly, and, having attached a piece of cotton to it, I dangled this bait before the lizard. I succeeded in “drawing” him. He was on it before I could say “knife.”

In less than a second the worsted was in his mouth, but he dropped it like a hot potato, and then sulked under the looking-glass, apparently greatly annoyed at having been made a fool of twice in succession. The next day I chanced to come upon a toad, busy catching insects. Wondering whether he would be deceived, I threw on to the grass near him the end of a lighted cigarette which I had been smoking. He at once caught sight of it, and sat there looking at it intently for some seconds, and I began to think he would not fall into the trap, but the temptation was too strong, for he shot forth his tongue to seize it. He discovered that the “tongue is an unruly member” as he retracted the smarting organ.

It is therefore clear that some insect-hunters are ever ready to try experiments as regards food.

Fish too, when really hungry, do not appear to exercise much discrimination as to the nature of the “fly” they will take.

The swarming of the “white ants” is a red-letter day for the insect-eating animals, an annual harvest in which they revel. The mynas and the crows do not disdain to partake of this copious meal supplied by nature.

The latter are omnivorous birds; all is grist which comes to their mill—carrion, fruit, locusts, termites, fish, grain, and the crumbs which fall from man’s table.

The mynas too eat a variety of food, but they are first and foremost insectivorous birds. They are never so happy as when chasing grasshoppers on the grass. By preference they accompany cattle, strutting along beside these and catching in their beaks the insects as these latter jump into the air, frightened by the approach of the great quadruped.

The beautiful white cattle egrets (Bubulcus coromandus) in a similar way make buffaloes and kine act as their beaters.

The familiar king crow (Dicrurus ater) adopts two methods of insect-catching. The one he favours most is that of the fly-catcher. Sometimes, however, he attaches himself to a flock of mynas. In such cases he flies to the van of the flock and squats on the ground, regardless of the fact that by so doing his beautiful forked tail gets dusty. As the mynas approach, snatching up grasshoppers, they put up a number of flying insects, and these the king crow secures on the wing. As soon as the last of the mynas has passed by the king crow again flies to the van and repeats the performance.

In India almost every company of mynas has its attendant king crow. Usually the two species are on good terms, but sometimes the king crow gets “above himself,” and then there is trouble. The other day I saw a bank myna (Acridotheres fuscus) hop on to a king crow’s back and administer unto him chastisement in the shape of a couple of vigorous pecks on the back of the head. On being released the king crow did not attempt to retaliate, but flew meekly away.

Among the Élite of the insect-hunters we must number the swifts. Strange birds are these. Not once in their lives do they set foot upon the ground. For hours at a time they pursue their speedy course through the thin air, snatching up, as they move at full speed, minute insects.

But even their powerful pinions cannot vibrate for ever, so at intervals they betake themselves to the verandah of some bungalow, and there hang on to the wall close under the roof. Their claws are simply hooks, and this is their rest—clinging to a smooth horizontal wall!

So long is the list of insect-hunters, and so varied are their methods, that I am unable to so much as mention many of them. I must content myself, in conclusion, with noticing the tits, cuckoo-shrikes, minivets, and white-eyes, which flit from leaf to leaf, picking up tiny insects; babblers and laughing thrushes, which spend the day rummaging among fallen leaves for insects; nuthatches and tree-creepers, which run up and down tree-trunks on the hunt for insects; and woodpeckers, which seize, by means of their sticky tongue, the insects they have, by a series of vigorous taps, frightened from their hiding-places in the bark.

Consider these, and you cannot but be impressed with the trials and troubles of an insect’s life!

                                                                                                                                                                                                                                                                                                           

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