Part 10

"Another consideration leading me to the same conclusion, is the fact, that beauty in animals is placed on prominent parts, or on parts which by erection or expansion are easily, and at the pairing season, frequently rendered prominent, such as a crest or tail. A spangle of ruby or emerald does not exist, for instance, on the side under the wing, which is seldom raised, of our domestic poultry. Such jewels are hung where man himself wears his, on the face and forehead, or court attention, like our own crowns, trains, shoulder-knots, breast-knots, painted cheeks, or jewelled ears. I cannot account for the existence of these gaudy ornaments to please man, for nowhere are they more gorgeous than in Birds which live in the depth of the tropical forest, where man is rarely a visitor; I cannot account for them on the principle that they do good to their possessors in the battle for life, because they rather render them conspicuous to their enemies, or coveted by man." But the beauty of these beings glows most brightly at the season of their pairing, and the selection of their mates.

Baron von Tschudi, the Swiss naturalist, has shown the important services of Birds in the destruction of insects. Without Birds, no agriculture or vegetation would be possible. They accomplish in a few months the profitable work of destruction which millions of human hands could not do half so well in as many years; and the sage, therefore, blamed in very severe terms the foolish practice of shooting and destroying Birds, which prevails more especially in Italy, recommending, on the contrary, the process of alluring Birds into gardens and corn-fields. Among the most deserving Birds he counts Swallows, Finches. Titmice, Redtails, &c. The naturalist then cites numerous instances in support of his assertion. In a flower-garden of one of his neighbours three rose-trees had been suddenly covered with about 2,000 tree-lice. At his recommendation a Marsh-Titmouse was located in the garden, which in a few hours consumed the whole brood, and left the roses perfectly clean. A Redtail in a room was observed to catch about 900 flies in an hour. A couple of Night-Swallows have been known to destroy a whole swarm of gnats in fifteen minutes. A pair of Golden-crested Wrens carry insects as food to their nestlings upon an average thirty-six times in an hour. For the protection of orchards and woods Titmice are of invaluable service. They consume, in particular, the eggs of the dangerous pine-spiders. One single female of such spiders frequently lays from 600 to 800 eggs twice in the summer season, while a Titmouse with her young ones consume daily several thousands of them. Wrens, Nuthatches, and Woodpeckers often dexterously fetch from the crevices of tree-bark numbers of insects for their nestlings.

Yet, profitless and wanton Bird-murder is common. The cliffs on the coasts of these islands are the resort of numerous kinds of Sea-Fowl, and these Fowl, we are told, are slaughtered by thousands, not merely for the sake of their feathers, but actually for the mere savage pleasure of killing. What speculation can enter into such a proceeding it may puzzle the reader to imagine; but it seems that the wing feathers of the poor White Gull are now inquired for in the plume-trade, and we are actually told of an order given by a single house for 10,000 of these unhappy Birds. When these facts were stated at the Meeting of the British Association, in August, 1868, at Norwich, a lady stood up boldly in defence of her sex, and declared that they sinned only through ignorance, and would never willingly wear the feathers of a Bird destroyed in the act of feeding its young. That part of the case, therefore, ought to be now in safe hands. In the Isle of Man a law has been passed, called the "Seagull Preservation Act," protecting these Birds by heavy penalties, on the ground of their utility in removing fish offal and guiding fishermen to shoals of fish. At a certain point of our shores a similar protection has been established. A visitor to the South Stack Lighthouse, on the coast of Anglesey, may see prodigious numbers of Sea-Fowl as tame as complete safety can make them. It has been ascertained that in thick weather, when neither light can be distinguished nor signal seen, the incessant scream of these Birds gives the best of all warnings to the mariner of the vicinity of the rock. The noise they make can be heard at a greater distance than the tolling of the great bell; and so valuable was this danger-signal considered, that an order from the Trinity House forbad even the firing of the warning gun, lest the colony of the Sea-Fowl should be disturbed. The signals of the bell and the cannon might be neglected or overpowered, but the Birds were always there and always audible.

It is inferred that Birds possess some notion of power, and of cause and effect, from the various actions which they perform. "Thus," relates Dr. Fleming, "we have seen the Hooded Crow in Zetland, when feeding on small shell-fish, able to break some of the tenderer kinds by means of its bill, aided in some cases by beating them against a stone; but, as some of the larger shells, such as the buckie and the welk, cannot be broken by such means, the Crow employs another method, by which, in consequence of applying foreign power, it accomplishes its object. Seizing the shell with its claws, it mounts up into the air, and then loosing its hold, causes the shell to fall among stones (in preference to the sand, the water, or the soil on the ground), that it may be broken, and give easier access to the contained animal. Should the first attempt fail, a second or third is tried, with this difference, that the Crow rises higher in the air, in order to increase the power of the fall, and more effectually remove the barrier to the contained morsel. On such occasions we have seen a strong Bird remain an apparently inattentive spectator of the process of breaking the shell, but coming to the spot with astonishing keenness when the efforts of its neighbour had been successful, in order to share the spoil. Pennant mentions similar operations performed by Crows on mussels."

The brain of Birds is, in general, large in proportion to the size of the body, and the instinctive powers are very perfect. A few kinds are rather dull and stupid; but the Parrot, Magpie, Raven, and many others, show great vivacity and quickness of intellect. The Raven has a great deal of humour in him. One, a most amusing and mischievous creature, would get into a well-stocked flower-garden, go to the beds where the gardener had sowed a great variety of seeds, with sticks put in the ground with labels, and then he would amuse himself with pulling up every stick, and laying them in heaps of ten or twelve on the path. This used to irritate the old gardener, who drove him away. The Raven knew that he ought not to do it, or he would not have done it. He would soon return to his mischief, and when the gardener again chased him (the old man could not run very fast), the Raven would just keep clear of the rake or the hoe in his hand, dancing before him, and singing as plainly as a Raven could. "Tol de rol de rol! tol de rol de rol!" with all kinds of mimicking gestures.

The signal of danger among Birds seems to be of universal comprehension; because the instant it is uttered we hear the whole flock, though composed of various species, repeat a separate moan, and away they all scuttle into the bushes for safety. The sentinel Birds give the signal, but in some cases they are deceived by false appearances. Dr. Edmonstone, in his "View of the Zetland Isles," relates a very striking illustration of the neglect of the sentinel, in his remarks on the Shag. "Great numbers of this species of the Cormorant are sometimes taken during the night, while asleep on the rocks of easy access; but before they commit themselves to sleep, one or two of the number are appointed to watch. Until these sentinels are secured, it is impossible to make a successful impression on the whole body; to surprise them is, therefore, the first object. With this view, the leader of the expedition creeps cautiously and imperceptibly along the rock, until he gets within a short distance of the watch. He then dips a worsted glove into the sea, and gently throws water in the face of the guard. The unsuspecting Bird, either disliking the impression, or fancying, from what he considers to be a disagreeable state of the weather, that all is quiet and safe, puts his head under his wing and soon falls asleep. His neck is then immediately broken, and the party dispatch as many as they choose."

Addison was a true lover of nature, which he shows in two letters written by him to the Earl of Warwick (afterwards his son-in-law), when that nobleman was very young. "My dear Lord," he writes, "I have employed the whole neighbourhood in looking after Birds'-nests, and not altogether without success. My man found one last night, but it proved a hen's, with fifteen eggs in it, covered with an old broody Duck, which may satisfy your Lordship's curiosity a little; though I am afraid the eggs will be of little use to us. This morning I have news brought me of a nest that has abundance of little eggs, streaked with red and blue veins, that, by the description they give me, must make a very beautiful figure in a string. My neighbours are very much divided in their opinions upon them: some say they are a Skylark's; others will have them to be a Canary-Bird's; but I am much mistaken in the colour and turn of the eggs if they are not full of Tomtit's." Again, Addison writes:--"Since I am so near your Lordship, methinks, after having passed the day amid more severe studies, you may often take a trip hither and relax yourself with these little curiosities of nature. I assure you no less a man than Cicero commends the two great friends of his age, Scipio and Lælius, for entertaining themselves at their country-house, which stood on the sea-shore, with picking up cockle-shells, and looking after Birds'-nests."

In another letter Addison writes:--"The business of this is to invite you to a concert of music which I have found out in a neighbouring wood. It begins precisely at six in the evening, and consists of a Blackbird, a Thrush, a Robin-Redbreast, and a Bullfinch. There is a Lark, that, by way of overture, sings and mounts till she is almost out of hearing; and afterwards, falling down leisurely, drops to the ground as soon as she has ended her song. The whole is concluded by a Nightingale, that has a much better voice than Mrs. Tofts, and something of the Italian manner in her divisions. If your Lordship will honour me with your company, I will promise to entertain you with much better music, and more agreeable scenes, than you ever met with at the Opera; and will conclude with a charming description of a Nightingale out of our friend Virgil:--

"'So close, in poplar shades, her children gone, The mother Nightingale laments alone; Whose nest some prying churl had found, and thence By stealth convey'd the unfeathered innocence: But she supplies the night with mournful strains, And melancholy music fills the plains.'"

BIRDS' EGGS AND NESTS.

The Eggs of Birds are variously tinted and mottled, and hence they become objects of interest to the collector. In this diversity of colour nature has, doubtless, some final object in view; and though not in every instance, yet in many, we can certainly see a design in the adaptation of the colours to the purpose of concealment, according to the habits of the various classes of Birds. Thus, as a general rule, the Eggs of Birds which have their nests in dark holes, or which construct nests that almost completely exclude the light, are white; as is also the case with those Birds that constantly sit on their Eggs, or leave them only for a short time during the night. Eggs of a light blue or light green tint will also be found in nests that are otherwise well concealed; while, on the other hand, a great proportion of those nests that are in exposed situations have Eggs varying in tints and spots in a remarkable degree, corresponding with the colours of external objects in their immediate neighbourhood. Thus, a dull green colour is common in most gallinaceous Birds that form their nests in grass, and in aquatic Birds among green hedges; a bright green colour is prevalent among Birds that nestle among trees and bushes; and a brown mottled colour is found in those Eggs that are deposited among furze, heath, shingle, and grey rocks and stones.

Birds'-nesting, we need hardly remark, is a favourite pursuit of boyhood; but, in some cases, its attractions have induced young persons to take up more important branches of natural history, or the collection, systematic arrangement, and comparison of Birds' Eggs, which is, in scientific study, termed Oology; and as the study of Birds cannot be considered complete until they are known in every stage, it forms a branch of Ornithology. In this case Birds'-nesting has an useful object; but many persons are content to acquire collections of Eggs without troubling themselves about the Birds which have laid them.

The late Mr. John Wolley, M.A., was one of the leading authorities upon the subject of European Ornithology, and was one of a number of University men, who, about twelve years ago, established the ornithological journal called "The Ibis," and who visited far-distant and unexplored regions, where they might hope to discover strange Birds and unknown Eggs. For several years Algiers and Tunis were their favourite resorts, and the meeting-places of many of our rarer Birds were hunted up in these countries, even so far as the Desert of the Great Sahara. Others preferred the New World as the scene of their labours, and collected long series of specimens in the highland of Guatemala, and the tropical forests of Belize. Mr. Wolley, however, confined his attention principally to the northern parts of Europe--that region being the breeding-quarters of a large number of Birds which are only known in this country as winter visitants. In order to be at his collecting-station at Muonioniska, on the frontier of Finnish Lapland, at the earliest commencement of the breeding-season, Mr. Wolley frequently passed the whole winter in that remote region. But the rigour of the climate under the Arctic Circle contributed to bring on a malady which terminated fatally in November, 1859.

Upon the decease of Mr. Wolley, his large collection of Birds' Eggs, in accordance with his last wishes, became the property of his friend, Mr. Alfred Newton, who is publishing a Catalogue of Mr. Wolley's Egg Cabinet, with notes from the deceased naturalist's journals. The first part contains the Eggs of Birds of Prey (_Accipitres_), recognisable at once by their strongly-hooked bill, formed to assist them in tearing their prey, and their large feet and sharpened claws, which aid them to grasp it. They are divisible into two very distinct groups--the diurnal Birds of Prey, consisting of the Hawks, Vultures, and Eagles; and the nocturnal Birds of Prey, or Owls. In the latter the Eggs are invariably colourless; in the former they are often strongly marked, and present some of the most beautiful objects in the whole series of Birds' Eggs.

In the most recently published list of European birds fifty-two species of birds of prey are given as occurring more or less frequently within the limits of our continent. Of the three generally-recognised species of European Vultures two are well represented, as regards their eggs, in the Wolleyan series. A few years ago the nesting of all these birds was utterly unknown to naturalists, and it was mainly through the exertions of Mr. Wolley and his friends that specimens first reached our collectors' cabinets. Here were found both the Egyptian Vulture and the Griffon breeding abundantly in the Eastern Atlas in 1857; and the eyries of these birds have since been visited by other collectors in the same country. The Eggs of the former of these Vultures are remarkable for their deep and rich coloration. The productions of the Griffon are not nearly so handsome, and are occasionally altogether destitute of markings. Of the Eagles of Europe the series of Eggs is very full, especially of the two well-known British species--the Golden Eagle and Sea Eagle. The Golden or Mountain Eagle is even now-a-days much more common in the remote parts of the British islands than is usually supposed to be the case. In 1852 Mr. Wolley was acquainted with five nests of this bird in various parts of Scotland, and there were undoubtedly at least as many more of which he did not learn the particulars. The eyrie is usually placed in some mountainous district, on the ledge of some "warm-looking" rock, well clothed with vegetation, and often by no means wild or exposed. Not unfrequently, under proper guidance, one can walk into the nest almost without climbing. Mr. Newton gives a very entertaining account of the taking of a pair of eggs from a nest in Argyllshire in 1861, where this seems to have been the case. In the whole ascent there was only one "ticklish place," where it was necessary to go sideways on a narrow ledge round some rocks. The Sea Eagle, on the other hand, generally breeds on the high cliffs upon the coast, often selecting the most inaccessible position for its eyrie. Sometimes, however, it will choose an island in the middle of an inland loch, and in such case places its nest upon the ground or in a tree.

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.