Part 11

Mr. Wolley's well-written notes of his adventures in quest of both these Eagles, as also those relating to the other rapacious birds, will be read with much interest; as will also the details concerning the nesting-habits of many of the rarer species of European birds, several of which, such as the Rough-legged Buzzard and the Lapp Owl, were first tracked to their breeding-quarters in the remotest wilds of Scandinavia by this indefatigable naturalist.[10]

Of large Eggs we are most familiar with those of the Ostrich, of which Mr. Burchell, when in Africa, found twenty-five Eggs in a hollow scratched in the sand, six feet in diameter, surrounded by a trench, but without grass, leaves, or sticks, as in the nests of other birds. In the trench were nine more Eggs, intended, as the Hottentots observed, as the first food of the twenty-five young Ostriches. Between sixty and seventy Eggs have been found in one nest; each is equal to twenty-four Eggs of the domestic hen, and holds five pints and a quarter of liquid. The shells are dirty white. The Hottentots string them together as belts, or garlands, and they are frequently mounted as cups. One Ostrich Egg is a sufficient meal for three persons. The Egg is cooked over the fire without either pot or water, the shell answering the purpose of the first, and the liquid nature of its contents that of the other.

Less familiar to the reader are the gigantic Eggs of the Epyornis, a bird which formerly lived in Madagascar. One of these Eggs contains the substance of 140 hens' Eggs. Mr. Geoffroy St. Hilaire describes some portions of an Egg of the Epyornis which show the Egg to have been of such a size as to be capable of containing about ten English quarts; that in the Museum of the Jardin des Plantes can only contain 8-3/4 quarts. Mr. Strickland, in some notices of the Dodo and its kindred, published in 1849, says that in the previous year a Mr. Dumarele, a French merchant at Bourbon, saw at Port Leven, Madagascar, an enormous Egg which held "_thirteen wine quart bottles of fluid_." The natives stated that the Egg was found in the jungle, and "that such Eggs were _very, very rarely_ met with."

A word or two about the nests of such gigantic birds. Captain Cook found, on an island near the north-east coast of New Holland, a nest "of a most enormous size. It was built with sticks upon the ground, and was no less than six-and-twenty feet in circumference, and two feet eight inches high." (Kerr's "Collection of Voyages and Travels," xiii., 318.) Captain Flinders found two similar nests on the south coast of New Holland, in King George's Bay. In his "Voyage," &c., London, 1818, he says, "They were built upon the ground, from which they rose above two feet, and were of vast circumference and great interior capacity; the branches of trees and other matter of which each nest was composed being enough to fill a cart."

Among the varieties of Birds'-nests are some very curious homes, of which we have but space to notice a few. The pendulous nest of the Indian Baya-bird is usually formed of the fibres of the palmyra, the cocoa-nut palm, and wild date of India, sometimes mixed with grass, neatly interlaced, and very strongly made. It consists of only one circular chamber, with a long tubular passage leading to it, and is suspended from a tree, preferred if overhanging water. The natives of India say the Baya lights up its nest with fire-flies. The bird lays from four to six white eggs. Bayas are of a very social disposition: numbers build on the same tree, or neighbouring trees, and singing in concert during the breeding season. The Baya is very docile, and taught to fly off the finger and return again; to dart after a ring or small coin, dropped into a deep well, and catch it before it reaches the water; to fetch and carry, and perform similar tricks.

The nest of the brilliant Golden-banded Oriole is a hammock of twisted fibrous substances, and is suspended in a low shrub, so as to swing to the breeze. The twine-like fibres of which it is woven are the filaments of the gigantic palm. The threads break away from the leaf, and hang like fringe to the magnificent foliage.

The Tailor-birds are the best nest-builders of all the feathered tribes. They interweave their nests between the twigs and branches of shrubs, or suspend the nests from them; and some of these birds have exercised arts from the creation which man has found of the greatest benefit to him since he discovered them. These birds, indeed, may be called the inventors of the several arts of the weaver, the sempstress, and the tailor; whence some of them have been denominated Weaver and Tailor Birds. The nests of the latter are, however, most remarkable. India produces several species of Tailor-birds that sew together leaves for the protection of their eggs and nestlings from the voracity of serpents and apes. They generally select the end of a branch or twig, and sew with cotton, thread, and fibres. Colonel Sykes has seen some in which the thread was literally knotted at the end. The inside of these nests is lined usually with down and cotton.

Tailor-birds are not confined to India or tropical countries. Italy can boast a species which exercises the same art. Mr. Gould has a specimen of this bird in his possession, and the Zoological Society have a nest in their Museum. This little bird, a species of the genus _sylvia_, in summer and autumn frequents marshes; but in the spring it seeks the meadows and corn-fields, in which, at that season, the marshes being bare of the sedges which cover them in summer, it is compelled to construct its nest in tussocks of grass on the brinks of ditches; but the leaves of these being weak, easily split, so that it is difficult for our little sempstresses to unite them, and so form the skeleton of the fabric. From this and other circumstances, the spring nests of these birds differ so widely from those made in the autumn that it seems next to impossible that both should be the work of the same artisan. The latter are constructed in a thick bunch of sedge or reed: they are shaped like a pear, being dilated below and narrow above, so as to leave an aperture sufficient for the ingress and egress of the bird. The greatest horizontal diameter of the nest is about two inches and a half, and the vertical is five inches.

The most wonderful thing in the construction of these nests is the method to which the little bird has recourse to keep united the living leaves of which it is composed. The sole in the weaving, more or less delicate, of the materials, forms the principle adopted by other birds to bind together the walls of their nests; but this sylvia is no weaver, for the leaves of the sedges or reeds are united by real stitches. In the edge of each leaf she makes, probably with her beak, minute apertures, through which she contrives to pass, perhaps by means of the same organ, one or more cords formed of spiders' web, particularly that of their egg-pouches. Those threads are not very long, and are sufficient to pass two or three times from one leaf to another. They are of unequal thickness, and have knots here and there, which, in some places, divide into two or three branches.

This is the manner in which the exterior of the nest is formed: the interior consists mainly of down, chiefly from plants, a little spiders' web being intermixed, which helps to keep the other substances together. The upper part and sides of the nest, that is, the external and internal, are in immediate contact; but in the lower part a greater space intervenes, filled with the slender foliage of grasses, and other materials, which render soft and warm the bed on which the eggs are to repose. This little bird feeds on insects. Its flight is rectilinear, but consists of many curves, with the concavity upwards. These curves equal in number the strokes of the wing, and at every stroke its whistle is heard, the intervals of which correspond with the rapidity of its flight.

The Australian Bower-bird, as its name implies, builds its nest like an arbour or bower, with twigs: in the British Museum are two specimens, each decorated--one with bones and fresh-water shells, and the other with feathers and land-shells; remarkable instances of taste for ornament already referred to in a preceding page. The Satin or Bower-bird is described by settlers in Australia as "a very troublesome rascal," which besets gardens; if once allowed to make a lodgment there it is very troublesome to get rid of him; he signalizes his arrival by pulling up, in his restless fussy way, everything in the garden that he can tug out of the ground, even to the little sticks to mark the site of seeds. A settler had formed a garden in the bush; there was no enclosure of the kind for miles in any direction: a flock of Bower-birds came; he got his gun and shot two or three; the flock went off, and he never saw another bird of the kind.

The Cape Swallows build nests which show extraordinary instinct allied to reason. A pair of these built their nest on the outside of a house at Cape Town against the angle formed by the wall and the board which supported the eaves. The whole of this nest was covered in, and it was furnished with a long neck or passage, through which the birds passed in and out. It resembled a longitudinal section of a Florence oil flask. This nest having crumbled away after the young birds had quitted it, the same pair, or another of the same species, built on the old foundation again. But this time an improvement was observable in the plan of it that can hardly be referred to the dictates of mere instinct. The body of the nest was of the same shape as before, but instead of a single passage it was furnished with one at each side, running along the angle of the roof; and on watching the birds, they were seen invariably to go in at one passage and come out at the other. Besides saving themselves the trouble of turning in the nest and disturbing, perhaps, its interior arrangement, they were guarded by this contrivance against a surprise by serpents, which frequently creep up along the wall, or descend from the thatch, and devour both the mother and her brood.

Dr. Livingstone relates a very curious instance of "Bird Confinement" under very strange circumstances. In passing through Mopane country, in South Africa, his men caught a great number of the birds called _Korwé_ in their breeding-places, which were holes in the mopane trees. They passed the nest of a Korwé just ready for the female to enter; the orifice was plastered on both sides, but a space was left of a heart shape, and exactly the size of the bird's body. The hole in the tree was in every case found to be prolonged some distance upwards above the opening, and thither the Korwé always fled to escape being caught. In another nest that was found, one white egg, much like that of a pigeon, was laid, and the bird dropped another when captured: she had four besides in the ovarium. Dr. Livingstone first saw this bird at Kolenbeng in the forest: he saw a slit only, about half an inch wide and three or four inches long, in a slight hollow of a tree; a native broke the clay which surrounded the slit, put his arm into the hole, and brought out a red-beaked Hornbill, which he killed. He told Dr. Livingstone that when the female enters her nest she submits to a real confinement. The male plasters up the entrance, leaving only a narrow slit by which to feed his mate, and which exactly suits the form of his beak. The female makes a nest of her own feathers, lays her eggs, hatches them, and remains with the young till they are fully fledged. During all this time, which is stated to be two or three months, the male continues to feed her and the young family. The prisoner generally becomes quite fat, and is esteemed a very dainty morsel by the natives; while the poor slave of a husband gets so lean that, on the sudden lowering of the temperature, which sometimes happens after a fall of rain, he is benumbed, falls down, and dies.

Dr. Livingstone, on passing the same tree at Kolenbeng about eight days afterwards, found the hole plastered up again, as if, in the short time that had elapsed, the disconsolate bird-husband had procured another wife. Dr. L. saw a nest with the plastering not quite finished, and others completed; he also received elsewhere, besides Kolobeng, the same account that the bird comes forth when the young are fully-fledged, at the period when the corn is ripe; indeed, her appearance abroad with her young is one of the signs they have for knowing when it ought to be so: the time is between two and three months. She is said sometimes to hatch two eggs, and, when the young of these are full-fledged, the other two are just out of the egg-shells: she then leaves the nest with the two elder, the orifice is again plastered up, and both male and female attend to the wants of the young.

There is a specimen of a nest in the Gardens of the Zoological Society, which merits description, besides that of the Bower-bird. Such is the nest of the Brush Turkey, which appears more like a small haystack than an ordinary nest, and the methodical manner in which it is constructed is thus described:--Tracing a circle of considerable radius, the birds begin to travel round it, continually grasping with their huge feet the leaves and grasses and dead twigs which are lying about, and flinging them inwards towards the centre. Each time that they complete their round, they narrow their circle, so that in a short time they clear away a circular belt, having in its centre a low irregular mass. By repeating the same process, however, they decrease the diameter of the mound as they increase its height, and at last a large and rudely conical mound is formed.

In this nest as many as a bushel of eggs are deposited, at regular intervals, long end downwards. The leaves form a fermenting mass, which relieves the mother of the necessity of setting upon them. The male, however, has to regulate the temperature of the mass, which would otherwise get too hot. This he does by making a central ventilating shaft, which carries off the superfluous heat; and, lest the temperature should fall too low, he is constantly engaged in covering and uncovering the eggs in order to hit the exact temperature to be applied until the egg is warmed into life.

FOOTNOTE:

[10] Abridged from the "Saturday Review."

THE EPICURE'S ORTOLAN.

We have allotted this bird to the epicure, because it is rarely heard of but in association with his luxurious table. Mr. Beckford describes the Ortolans among the delicacies which he saw in the kitchen of the monastery of Batalha as "lumps of celestial fatness."

Ortolan is the French and English names for a species of _Fringillidæ_ (Finches). It is the _Hortulanus_ of Gesner and other naturalists; _Miliaria pinguescens_ of Frisch; _Emberiza Hortulana_ of Linnæus; _Ortolano_ of the Italians generally; _Tordino Berluccio_ of the Venetians; _Garton Ammer_ and _Fetammer_ of the Germans; and _Gerste Keneu_ of the Netherlanders. This wide dispersion on the Continent bespeaks the pet character of the bird. Montagu terms it the Green-headed Bunting.

The French have a fanciful derivation of the name: they say it is from the Italian word for gardener, which is from the Latin _hortus_, garden; because, according to Menage, in Italy, where the bird is common, it is quite at home in the hedges of gardens.

The male bird has the throat, circle round the eyes, and a narrow band springing from the angle of the bill, yellow; head and neck grey, with a tinge of olive, and small brown spots; feathers black, edged with red; breast, belly, and abdomen, reddish grey, the feathers terminated with ash-colour; tail blackish, two external feathers, in part white; length rather more than six inches. There are, also, varieties marked white, green, blackish, and entirely black. The nest, which is constructed of fibres of plants and leaves, is frequently found on the ground in corn-fields, and sometimes in hedges and bushes.

The Ortolan is not famed for its song, which is, however, soft and sweet. Like the Nightingale, to which it has other points of resemblance, the Ortolan sings after, as well as before sunset. It was this bird that Varro, the lyric poet, called his companion by night and day.

The south of Europe may be considered the summer and autumnal head-quarters of the Ortolan, though it is a summer visitor in the central and northern parts. In Italy it is said to be common by Temminck and others. The Prince of Musignano states it to be found in the Sabine mountains; adding that it rarely flies in the plains of Rome, but is frequent in Tuscany. Lapland, Russia, Denmark. Sweden, and Norway, are among the countries visited by it. In the British Isles it seems only entitled to rank as an autumnal visitor, but it may occur more frequently than is generally supposed; for, especially to an unpractised eye, it might be mistaken for the Yellow Hammer, and in some states of plumage for other Buntings. It has been taken in the neighbourhood of London. In 1837 there was a live specimen in an aviary of the Zoological Society in Regent's-park; and many Ortolans are sent alive to the London market from Prussia. There is, however, some consolation for the rarity of the Ortolan in England. It is approached in delicacy by our Wheatear, which is termed the _English Ortolan_. Hence it has been pursued as a delicate morsel throughout all its island haunts. Bewick captured it at sea, off the coast of Yorkshire, in May, 1822. Every spring and autumn it may be observed at Gibraltar, on its migration. Mr. Strickland saw it at Smyrna in April. North Africa is its winter residence. Colonel Sykes notes it in his catalogue of the birds of the Deccan.

Ortolans are solitary birds; they fly in pairs, rarely three together, and never in flocks. They are taken in traps from March or April to September, when they are often poor and thin; but if fed with plenty of millet-seed and other grain, they become sheer lumps of fat, and delicious morsels. They are fattened thus in large establishments in the south of Europe; Mr. Gould states this to be effected in Italy, and the south of France, in dark rooms; and the Prince of Musignano, having described the process, adds the relishing words. "Carne exquisita."

The fattening process in Italy is one of great refinement in the manner of feeding. It is the fat of the Ortolan which is so delicious; but it has a peculiar habit of feeding which is opposed to the rapid fattening, this is, it feeds only at the rising of the sun. Yet this peculiarity has not proved an insurmountable obstacle to the Italian gourmands. The Ortolans are placed in a dark chamber, perfectly dark, with only one aperture in the wall. The food is scattered over the floor of the chamber. At a certain hour in the morning the keeper of the birds places a lantern in the orifice of the wall; when the dim light thrown from the lantern on the floor of the apartment induces the Ortolans to believe that the sun is about to rise, and they greedily consume the food upon the floor. More food is now scattered over it, and the lantern is withdrawn.

The Ortolans, rather surprised at the shortness of the day, think it their duty to fall asleep, as night has spread her sable mantle round them. During sleep, little of the food being expended in the production of force, most of it goes to the formation of muscle and fat. After they have been allowed to repose for one or two hours, in order to complete the digestion of the food taken, their keeper again exhibits the lantern through the aperture. The "rising sun" a second time illumines the apartment, and the birds, awaking from their slumber, apply themselves voraciously to the food on the floor; after having discussed which, they are again enveloped in darkness. Thus the sun is made to shed its rising rays into the chamber floor four or five times every day, and as many nights following. The Ortolans thus treated become like little balls of fat in a few days. This not uninteresting process has been detailed by Dr. Lyon Playfair to the Royal Agricultural Society. It may, probably, be applied to purposes with less luxurious objects than fattening Ortolans.

Notwithstanding its delicacy, the Ortolan fattens very fast; and it is this lump of fatness that is its merit, and has sometimes caused it to be preferred to the Becafico. According to Buffon, the Greeks and Romans understood fattening the Ortolan upon millet. But a lively French commentator doubts this statement: he maintains that had the ancients known the Ortolan, they would have deified it, and built altars to it upon Mount Hymettus and the Saniculum; adding, did they not deify the horse of Caligula, which was certainly not worth an Ortolan? and Caligula himself, who was not worth so much as his horse? However, this dispute belongs to the "classics of the table."

The Ortolan is considered sufficiently fat when it is a handful, and is judged by feeling it, and not by appearance. It should not be killed with violence, like other birds; this might crush and bruise the delicate flesh, and spoil the _coup-d'oeil_, to avoid which it is recommended to plunge the head of the Ortolan into a glass of brandy. The culinary instruction is as follows: having picked the bird of its feathers, singe it with the flame of paper or spirits of wine; cut off the beak and ends of the feet; do not draw it; put it into a paper case soaked in olive oil, and broil it over a slow fire of slack cinders, like that required for a pigeon _à la crapaudine_; in a few minutes the Ortolan will swim in its own fat, and will be cooked. Some gourmands wrap each bird in a vine-leaf.

A gourmand will take an Ortolan by the legs and craunch it in delicious mouthfuls, so as absolutely to lose none of it. More delicate feeders cut the bird into quarters, and lay aside the gizzard; the rest may be eaten, even to the bones, which are sufficiently tender for the most delicate mouth to masticate without inconvenience.

On the Continent, Ortolans are packed in tin boxes for exportation. They may be bought in London for half-a-crown a-piece. A few poulterers import Ortolans in considerable numbers, and some have acquired the art of fattening these birds.[11] Alexis Soyer put into the hundred guinea dish which he prepared for the royal table at the grand banquet at York, in 1850, five pounds worth of Ortolans, which were obtained from Belgium.

FOOTNOTE: