The Pirol, Golden Oriole, or Cherry Bird (Oriolus galbula), is about nine and three-quarter inches long and eighteen broad; the wing measures about six inches, and the tail four inches. The female is a trifle smaller than her mate. The plumage of the male is principally of a splendid light yellow, only the bridles, wings, and tail being black; the roots of the quills and the tips of the tail-feathers are ornamented with a yellow spot. The colour of the female, as well as that of the one-year old male and young birds, is green above and white beneath; the front of the throat is of a light ash grey, marked with long greyish-black streaks; the tail is tipped with yellow, and the wing-feathers edged with a light border; the eyes are bright carmine, the beak a dull red, that of the female and young being greyish black, and their feet lead colour.
In Germany this beautiful species has received the name of the Whitsuntide Bird, from the fact that in most parts of Europe, except the extreme north, it usually makes its appearance at that season of the year. Central Asia, however, must be regarded as the actual habitat of the Pirol; there, as elsewhere, it frequents wooded districts, generally avoiding mountain tracts, and only tarrying for a short time amongst the forests of fir or pine trees passed over in journeying to another locality. Birch or oak trees afford it a favourite retreat, and upon these it will establish its head-quarters, only leaving them to fly about the gardens or orchards in the immediate neighbourhood in search of food, and thus becoming very troublesome to the inhabitants at the season when the cherries ripen. During the course of its migrations, the Pirol visits the very centre of Africa; we ourselves have seen it as far south as eleven degrees north latitude, and it is constantly met with in the western parts of the continent. In its habits this bird is distinguished by many peculiarities; although living in the immediate vicinity of man, it is extremely shy, and constantly endeavours to conceal itself from his view. In disposition it is always mild and restless, flying and fluttering about incessantly from one tree or branch to another, only coming down to perch upon a bush, or searching the ground when desirous of procuring insect food. Its gait is so extremely awkward, that it may be said to progress by means of a series of short clumsy jumps, rather than by hopping in the usual manner. Its flight is heavy, noisy, rapid, and, like that of the Starling, very undulating. Amongst themselves these birds are extremely quarrelsome, often pecking and hunting each other about for a quarter of an hour at a time upon the slightest provocation—indeed, they exhibit a most pugnacious disposition towards all their feathered companions. Their voice is very loud, full, and agreeable, and they would seem never to be weary of exhibiting their vocal powers; a pair of them is sufficient to enliven the whole wood in which they take up their abode.
The nest, which is most artistically constructed, is usually suspended from a forked and slender branch; in shape it is like a deep basin. The walls are formed of blades of grass, vine-tendrils, wool, cobwebs, and a great variety of similar materials, the interior being snugly lined with a thick bed of wool, feathers, or fine grass; this beautiful structure is most skilfully fastened in its place by means of long threads or twigs, moistened with saliva from the beak of the bird, and then wound several times round the branch, their ends being woven into the body of the nest. Both parents assist in the formation of the outer wall of this pretty fabric, but the female alone undertakes the preparation of the warm bed upon which the brood are to be deposited. The eggs, five in number, are laid about June; they are smooth, white, and marked with dark grey or reddish spots. Passler tells us that the affection of these birds for their young progeny is very great, and that they show considerable courage and determination in defending their little family if any attempt is made to touch their nest. At noon the female is relieved from her watch by her mate, who remains upon the nest whilst she flies away hurriedly to snatch a hasty meal from the neighbouring fields. The young are hatched within a fortnight; they grow with great rapidity, and moult their feathers before leaving the nest. Should a pair of Pirols be driven from their home whilst brooding, they will at once set about their preparation for another family, but will never recommence if disturbed a second time. Various kinds of insects, caterpillars, butterflies, or worms are consumed by these birds in great numbers, and they also eat cherries and other descriptions of fruit in abundance. Notwithstanding its usual timidity, the Pirol has been known to become so tame when caged as to feed from its keeper's hand or mouth; and in one instance that came under our notice, would pull its master by the hair if he omitted to pay it the attention desired.
Africa and Southern Asia possess many species of Orioles; these it is needless to enumerate, as they closely resemble those that inhabit Europe. We find, however, in Australia another group of these birds, which we must mention, inasmuch as they form a connecting link between the Pirols and the Birds of Paradise.
THE GOLDEN-CRESTED ORIOLE.
The Royal or Golden-crested Oriole (Sericulus chrysocephalus), one of the most beautiful creatures inhabiting that fertile and highly-favoured continent, is distinguished by its short and feeble bill, the upper mandible of which is very distinctly notched, its straightly cut, or very slightly rounded tail, and the peculiar nature of its feathers. The head, back of the neck, and an arched line which passes from the nape over the breast, are bright yellow, while the rest of the plumage is velvety black. The first quill is black, the rest of the primaries yellow in the middle and black at the root and tip; the secondaries are yellow, if we except a narrow border to the outer web. The eye is pale yellow, the beak of a deeper shade, and the feet black. In the female the head and throat are brownish white, the top of the head being marked with a large black spot; the upper portions of the wings and tail are olive brown, the feathers of the back tipped with triangular brownish-white spots; the belly is olive brown, and marked with similar but still more distinct spots. The eyes are brown, and the feet black. The young resemble their mother. The full-sized birds are about eight inches and three-quarters in length.
We learn from Gould that this splendid species is confined to Eastern Australia, and is very numerous in the bush about Moreton Bay, as also upon the neighbouring islands. In its habits it resembles the Pirol, but is much quieter. It has no fear of man, and delights to perch in full view upon the highest and most conspicuous branches of the trees; it would, however, seem as if the old males learnt by experience the danger to which they expose themselves by this lavish display of their gorgeous plumage, for they are much more prudent in this respect than the females and young males. As regards their mode of incubation Gould was unable to obtain any trustworthy intelligence.
But few years have passed away since Europeans first became acquainted with the living forms of the magnificent creatures we are now about to describe. Their glowing feathers, it is true, had long been familiar to every eye, but the natives of New Guinea, in preparing their skins for exportation, had removed all trace of legs, thus giving rise to most extravagant tales about the life they led in their native lands. The Birds of Paradise, as they were called on account of their apparent want of feet and great beauty, retained, it was popularly supposed, the forms they had borne in the Garden of Eden, and lived upon no more substantial nourishment than dew, or the ether through which it was imagined that they perpetually floated by the aid of their long, cloud-like plumage, only seeking an occasional change of position in suspending themselves for a few minutes from the branches of a tree by some of the tendril-like feathers of their tail. In vain naturalists endeavoured to prove the absurdity of these and many other fables; the public mind would not be convinced, and for centuries retained and cherished these most poetical notions. Since those days many travellers in New Guinea and its islands have seen and described the Birds of Paradise, and we are indebted to Bennett, Wallace, and Rosenberg for many very interesting but by no means exhaustive particulars as to their habits and mode of life.