At the time when the grass is irrigated numbers of pied mynas (Sturnopastor contra) and paddy-birds (Ardeola grayii) visit the lawn. The former strut about, and the latter stand near the place where the water trickles from the pipe. Both come in quest of creatures driven from their underground homes by the water.
Occasionally two or three crows visit the lawn; these come to gratify their curiosity rather than for food. Crows are inquisitive creatures, and cannot resist visiting any spot where they see other birds enjoying themselves. Wagtails are birds which are very partial to lawns, but all the Indian species, with one exception, leave India in April or May, so that their graceful forms do not delight the eye in the hot weather.
XV
THE GREY HORNBILL
Hornbills, like the Jews, are a peculiar race. There are no other birds like unto them. They are fowls of extravagant form. Their bodies are studies in disproportion. The beak and tail of each species would fit admirably a bird twice as big as their actual possessor, while birds less than half their size might well look askance at the wings with which hornbills are blessed. With the solitary exception of the “cake walk” of the adjutant (Leptoptilus dubius), I know of no sight in Nature more absurd than the flight of the hornbill. By dint of a series of vigorous flaps of its disproportionately short wings the bird manages to propel itself through the air. But the efforts put forth are too strenuous to be maintained for many seconds at a time. When it has managed to acquire a little impetus, the great bird gives its pinions a rest, and sails at a snail’s pace for a few seconds, after which, in order to save itself from falling, it violently flaps its wings again, and thus manages to win its way laboriously from one grove to another, in much the same way as the primitive flying reptiles must have done. Nor is the excitement over when it reaches its destination. Owing to the weight of the beak, the hornbill is in danger of toppling over, head foremost, as it alights on a branch, and assuredly would sometimes do so but for the long tail which serves to balance the great beak. So vigorously does the hornbill have to flap its wings during flight that the sound of the air rushing through them can be heard for nearly half a mile in the case of the largest species.
All hornbills are grotesque. The grey species is, however, the least grotesque, and approaches the most nearly to the appearance of normal birds. Three species of grey hornbill occur in India. The common grey hornbill (Lophoceros birostris) is characterised by the possession of what is known as a casque—an appendage which the other two species of grey hornbill lack. This is a horny excrescence from the upper surface of the beak. In some species the casque is so large as to extend over the greater part of the head and beak. No one has yet discovered its use. I am inclined to think that it has no use. The Malabar and Ceylonese grey hornbills, whose habits are identical with those of the common grey hornbill, thrive very well, in spite of the fact that they have no casque.
Lophoceros birostris is a bird nearly two feet in length. The prevailing hue of the plumage is greyish brown. The bill, which is four inches long, and the casque are blackish. Like the other members of this peculiar family, the grey hornbill possesses eyelashes, which increase the strangeness of its appearance. This species is found in most parts of the plains of India, except the Malabar coast, where it is replaced by Lophoceros griseus. The grey hornbill of Ceylon is the species L. gingalensis.
The majority of species of hornbill shun the vicinity of human beings. They are accordingly to be found only in the Terai and other great forest tracts. The grey hornbill, on the contrary, shows no fear of man. Although strictly arboreal in its habits, it occurs in those parts of the country that are not thickly wooded. A grove of trees is all that it demands. Grey hornbills are birds of the highway and the village. Usually they go about in small flocks.
Lophoceros birostris is particularly abundant in the sub-Himalayan districts of the United Provinces. In Oudh and the eastern part of Agra almost every village has its colony of grey hornbills. These hamlets are nearly always surrounded by trees, usually bamboos, among which the hornbills live. In many parts of Northern India grey hornbills are commonly seen in the avenues of trees which are planted along the high roads to shelter wayfarers from the midday sun.
Hornbills feed largely on fruit and are fond of that of the pipal and the banian trees. Their great bills are admirably suited to the plucking of fruit. When the hornbill has severed a berry, it tosses it into the air, catches it in the bill as it falls, and then swallows it. This is the most expeditious way of passing the food from the tip of its bill to the entrance to its gullet.
The cry of the grey hornbill is feeble for so large a bird, and is querulous, like that of the common kite.