THE HOMRAY (Dichoceros bicornis).
THE DJOLAN, OR YEAR BIRD.
The DJOLAN, or YEAR BIRD (Rhyticeros plicatus), represents a group principally characterised by a wrinkled excrescence situated on the upper mandible. The wings are of medium size, and the feet short and powerful; the tail is rounded at its extremity. The plumage of the Year Bird is principally black; the top of the head is brownish yellow, and the tail white; the eye is brownish red, the beak light horn-grey, and the foot blackish grey. The bare skin upon the throat is pale yellow in the male, and dull blue in the female. In other respects the latter resembles her mate. The young are without the excrescence on the beak, which only develops after they are full grown. The name of Year Bird is derived, as we are told, from an idea formerly prevalent that a fresh wrinkle was annually added to the remarkable skin-like growth on the upper mandible.
THE DJOLAN, OR YEAR BIRD (Rhyticeros plicatus).
The Djolan, as this bird is called by the natives, inhabits the Sunda Islands and Malacca, where it frequents extensive forests and promontories, from three thousand to four thousand feet above the sea, rarely ascending beyond that height, apparently because certain favourite fruit-trees do not grow above that point. From early morning it may be seen sweeping in a direct line above the summits of the loftiest giants of the forest, with head and neck thrust forward, producing as it flies the remarkable rushing sound above described. These birds live in pairs throughout the entire year, and subsist upon various kinds of fruits. We have made various successful attempts to rear the young on cooked potatoes and fruit, but have frequently found that the adults refused all nourishment, and only survived their captivity a few days. Whilst at liberty we have never heard this species produce any sound; but, when excited, the prisoners uttered a loud grunting resembling that of an angry pig. Despite the light construction of their large beak, they bite very sharply, and we have known them make a hole through a half-inch plank with which their cage had been repaired. The nest of this species is placed at a considerable height, in the hollow of one of the huge trees, covered with dense masses of parasites that form so striking a feature in the primitive forest. The only nest we were fortunate enough to find was betrayed to us by the movements of the male bird. This breeding-hole was some sixty feet above the ground; in it we saw the female securely walled up with a mixture of earth and bits of decayed wood, firmly cemented together with what we believe to be spittle from the male bird's beak. Only a small aperture was left, through which the female could obtain the fruits assiduously brought her by her affectionate spouse. This breeding female had lost almost all the principal wing and tail feathers, and would therefore have been powerless to save herself from danger had she not been thus safely protected. The natives informed us that the female always moults in this manner during the period of incubation, and does not recover her plumage till the young are ready to fly. Horsfield mentions having been told that should the male bird discover that a rival has attempted to minister to his partner's wants during his absence in search of food, he at once tears down the protecting wall, and leaves his fickle mistress to perish from exposure and hunger. The nest of this bird described by Bernstein was formed of a few twigs and chips of wood placed at the bottom of the hole, which contained a still blind nestling, and an egg that was nearly hatched. The latter was of small size, oval in form, and had a rough white shell, marked here and there with pale red and brown spots and cloudings. In an account given by Layard of the incubation of an allied species, he says: "My friend, Mrs. Baker, thus speaks of the singular habits this bird exhibits, in common with its congeners, of blocking up the sitting female in her nest:—'Building her up with mud and sticks into old broken hollow trees, or between the crowded stems of the tall euphorbia in the forests, and closing up the entrance in such a manner that it is impossible to escape, only leaving a small hole for the purpose of feeding her during her long imprisonment; I do not know how long she is thus kept in durance vile, but we have sometimes taken the females out, and found them so cramped and weak as to be unable to fly. This peculiar habit may be a precautionary measure, to protect the female during the season of incubation, as she may be too dull and exhausted to fly from approaching danger. Depend upon it, it is not done in vain. We self-willed and presumptuous beings often act without reason or reflection, but the birds of the air and the lilies of the field are protected by a higher Power.'"
THE ABBAGAMBA, OR ABYSSINIAN HORNBILL.
The ABBAGAMBA, or ABYSSINIAN HORNBILL (Bucorax Abyssinicus), a well-known African species of the above family, is a large, powerfully-formed bird, with short wings and tail and long legs. Its huge beak, about a foot in length, is slightly curved, flat at its sides, and blunt at the tip. The base of the upper mandible is surmounted by a high protuberance. The regions of the eye and throat are bare, and very brightly coloured. In the wing the sixth quill is longer than the rest. The entire plumage, except six yellowish white primary quills, is of a glossy black, the eye is dark brown, and the beak black, with a red and yellow spot on its upper mandible. The eye-rings and throat are dark grey, the latter bordered with bright red. The female is smaller than her mate, and has only a comparatively small portion of her neck bare. The length of the male is forty-three inches and a half, and his breadth seventy inches; the wing measures twenty-one inches and three-quarters, and the tail thirteen inches and a half.