Part 14

The call-note of the Pine-tree Cross-bill, common to both sexes, is "Gop, gop," "Gip, gip," "Yock, yock." This is uttered either whilst flying or when at rest; and so gentle is its sound, that the listener must be quite close to the tree in order to hear it; indeed, he might imagine the bird to be at a considerable distance, till, on glancing upwards, he beholds it perched just above his head. The cry of the Fir Cross-bill is shriller and weaker than that of the Large-beak. Those who have heard both species can scarcely mistake them. No sooner does one of them utter the sound of "Gip, gip," than all the rest become attentive, and generally fly away together, if the first bird sets the example; and if, whilst they are eating, other birds pass by, their cry of "Gip, gip," is intended as an invitation to join the party and partake of the meal. Should one be at a distance from the rest, the almost incessant cry of "Gop" will bring it back; it is also the signal for the whole flock to settle. This last note is never uttered during flight. Whilst brooding, the Cross-bill employs a gentle sound, not unlike the piping of a little chicken whilst under the wing of the hen, and the young have a similar cry, mingled with the call-note of the parent bird. The song of the male is very pleasing, particularly that of the Pine Cross-bill; it consists of a cadence formed of a variety of weak twittering low notes. These birds are to be heard at their best when the weather is fine and warm, and are quite silent if the day is windy or stormy; whilst singing, they perch on the summit of the trees. The female has the same song as her mate, but it is somewhat gentler and more confused. In captivity they sing throughout the year, except during the moulting season. The food of the Cross-bill consists almost exclusively of the seeds of the forest trees, in obtaining which its strong crossed beak is of the greatest service, as it requires considerable strength and much skill to break open the cones of the fir and pine, in order to obtain the hidden seed. The bird perches upon a cone with its head downwards, or lays it upon a branch, and stands upon it, holding it fast with its sharp, strong, pointed claws. Sometimes it will bite off the cone and carry it to a neighbouring bough, or fly with great difficulty some ten or twenty paces to another tree where it can be opened, for a suitable spot is not to be found on every branch. If the cone is large, the little creature tears its way through the middle of the outside with its upper mandible, inserts its half-opened beak, and forces an opening by a sideway motion of the jaws; it is then easy for it to pick out the seeds, which are soon swallowed. The breaking up of the husks produces a cracking sound, that is heard very distinctly from below. The cones are seldom completely emptied of their seeds, but are thrown down to the ground when scarcely touched, or not more than half cleared, so that the grass beneath the trees on which a party of these creatures has been perched is often completely strewn with them. When, however, there are no more to be gathered, the birds will seek and feed upon those they have previously flung away. The Pine Cross-bill seldom touches the far harder cones of other fir-trees, as it does not possess strength sufficient to open them, though the Large-beaked species breaks them without difficulty, and can at one stroke tear off all the husks into the midst of which it has plunged its beak. A cone is thus rifled of its contents in the space of two minutes, when it is immediately thrown down and another taken. Should the Cross-bill not be disturbed, it will remain for hours upon the same tree, and continue for weeks together in one part of the country. As long as fir-cones can be found, it seems not to care for other food; but if driven by hunger it will eat oily seeds such as those of the hemp or thistle, or even insects, seeking for them in the neighbouring gardens and orchards. These birds are cleanly in their habits, preening themselves carefully after every meal, and rubbing their beak for minutes at a time upon the branches, in order to cleanse it. Still, it is not always possible for them to keep their plumage trim, and their feathers are frequently covered with a coating of resin. The feeding of the Cross-bills on the fir-cones has another very remarkable result. Their flesh becomes so penetrated with resin that it will resist putrefaction for a lengthened period. It acquires by exposure a peculiar smell, but cannot be said to decay. We have made many experiments upon this subject, and always with the same result; there is a specimen now lying before us, which was shot during the extreme heat of last summer, and still retains its feathers. We have even seen a mummy of this bird which was twenty years old. That the resin imbibed is the only cause of this peculiarity is proved by the fact that specimens which have lived upon other diet for some time before their deaths, share the ordinary fate of dead birds. The Cross-bills are at all times a great ornament to our woods; but it is only in the winter, when the snow is on the ground, that we appreciate their full beauty. At such times their brilliant red forms may be seen perched on the dark green branches, and as the white, snow-covered ground throws them into strong relief, the fir upon which they rest presents the appearance of a vast Christmas tree. Their appearance is rendered still more attractive by the circumstance that they usually assemble to breed during the winter season; though they will also lay eggs during other months of the year--as readily in the height of summer as when the snow lies thick upon the branches, and all other living inhabitants of the woods are silent. They seem to trouble themselves but little about the change of seasons. At the breeding time the pairs into which the flock separates, choose the finest trees in the woods, whereon they make the cradles for their young, as near together as possible. The male then perches himself upon the highest branch of the most lofty tree, singing energetically, calling to his mate incessantly, and turning himself in all directions, seeming to wish to exhibit himself and his beauty to her in all points of view. If she, however, does not answer his call, he flies to another tree and recommences his song. Should she still linger, he chases her sportively from branch to branch, uttering his piping cry; at such times the Large-beaked Cross-bill accompanies these endeavours to attract the notice of his mate with a peculiar fluttering of his wings, often rising into the air and then settling again in the same place; these demonstrations continue till about noon, when the building of the nest commences. This is made upon some widely-projecting or forked branch, and is always situated so as to be well covered by the twigs that hang over it, partly to guard the little family from any snow that might fall, and partly for the sake of concealment. The nest is most artistically constructed. It is formed externally of pine twigs, and lined with feathers, soft grass, and the needle-like leaves of the fir-tree. The walls are about an inch thick, and strongly woven together, the interior being tolerably deep. All the nests that we see in this country are thus constructed, and therefore it is rather surprising to hear from Eckström, one of the first Swedish naturalists, that in Sweden "the Large-beaked Cross-bill builds a round nest, formed of twigs, interwoven with other materials, and of such a large size that it is at least an ell in diameter; the entrance being perfectly round, and so small that the bird can only pass in and out with difficulty; while the interior is large enough to hold a man's fist. The winter nests," as he tells us, "are built in this manner; those for summer use are smaller, and have thinner walls." We mention this statement, though we are by no means sure that it applies to the species with which we are familiar. We had once an opportunity of observing a female Cross-bill whilst building. She commenced by breaking off dry twigs, and carrying them to the spot she had chosen for the nest, and then flew in search of such scraps as she could find, carrying away a whole beakful at a time, and laying them in their proper place. As soon as the rounding of the exterior nest was accomplished, the bird got inside and spent some time in pushing it with her breast and pulling until it was somewhat in order. She took all the materials from a neighbouring tree, and was so industrious that she continued her work during the afternoon, only requiring from two to three minutes to prepare and carry each load. The brood consists of from three to four rather small eggs, of a greyish or blueish white colour, streaked with faint blood red, reddish brown, or blackish brown spots; sometimes these spots take the form of a wreath round the broad end of the egg, and sometimes cover the whole of its surface.

The careful mother nurses her young with the greatest attention, whilst the male fulfils his task of tending her and supplying all her wants. The nestlings are fed from the first day of their life on the seeds of the fir or pine, softened in the crop of the old birds and half digested, but after a short time they are able to take them without this preparation. They rapidly attain their full size, and are active and lively, but require parental attention for the lengthened period during which their mandibles are not crossed, as until they are so the young are incapable of opening cones for themselves. After leaving the nest, they seek shelter in the thickest trees, in the vicinity of their parents, and while the latter are procuring fir-cones, as above described, will cry uninterruptedly, like naughty children, following the old birds hastily should they leave the tree, or calling long and dismally until their return. After a time they are taught to work, their parents commencing by giving them half opened cones to practise upon, and afterwards such as have only been bitten from the trees. When the young are quite independent in this respect, they form fresh flocks, or associate themselves with that of their parents.

It is easy to ensnare the Cross-bill if it is enticed to the ground by the help of a tame bird. In some parts of Germany high poles are prepared, covered with pine branches, in which limed twigs are concealed; these are then placed in the upper parts of the woods, and a decoy-bird fastened beneath them, which contrives to attract the attention of all that fly over it, so that many perch upon the bushes and limed twigs; in this manner numbers may be caught in the course of a morning.

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We must leave it undecided whether a most remarkable species found in the Sandwich Islands be reckoned among the Cross-bills or not. Many naturalists have no hesitation in so placing it, though Reichenbach believes it to be more nearly allied to the Honey-eaters, with whom our readers will shortly be made acquainted, than to the Finches. This bird, which we shall call the PARROT-GREENFINCH (_Psittirostra psittacca_), appears to be even more of a connecting link between the Parrots and the Finches than the Cross-bill or the Parrot-Bullfinch, as its two names clearly express. In size it resembles our bullfinch, its length being about six and three-quarter inches, and the length of the wings three and a half inches. The plumage is of a beautiful parrot-green, intermixed with grey upon the breast. The head and breast are of gamboge yellow, the wings and tail-feathers edged with green, and the back and legs of a black colour. We are entirely ignorant of such particulars of its life and habits as might give us any assistance in decisively assigning this bird to its proper place; it still may be numbered amongst our greatest rarities, as but very few collections can boast of a specimen.

THE BULLFINCHES (_Pyrrhulæ_).

The BULLFINCHES are known by their short thick beak, arched in all directions, while the upper mandible terminates in a small hook. Their other characteristics are their short moderately strong legs and somewhat soft plumage, the nature and colour of which vary considerably in the different members of the family. These birds are found throughout the whole world, with the exception of Australia; but they principally frequent the temperate and frigid zones. They inhabit woods and bushes, as well as mountains and deserts, and pass as much of their time upon trees as upon the ground. Their food consists principally of corn, seeds of various kinds, and green leaves and buds. Being eminently social, they mingle freely with their congeners, and very soon become attached to man. In their movements they are somewhat clumsy, and much behind the Cross-bills in agility and beauty. Their song is very simple and pleasing, and to this some add the gift of being able to learn and imitate with great accuracy the notes of other birds. The nest is always carefully hidden in trees or the clefts of rocks. The number of eggs is from four to six.

THE PARROT-BULLFINCH.

The PARROT-BULLFINCH (_Paradoxornis flavirostris_) should, as its name testifies, be assigned the first place in this family. This is a very rare bird, and of striking appearance, inhabiting Southern Asia; it has not the beak of the true Bullfinch, the upper mandible not rising noticeably above the lower one, but curving outwards towards the sides, as in some species of parrots. The wings are somewhat feeble and decidedly rounded, the sixth quill being longer than the rest; the tail is long, graduated, and strong; the legs and feet very powerful, the toes of middle length, and the claws much bent. Its soft and flowing plumage is of a greyish brown, somewhat lighter on the under parts of the body, reddish brown on the back of the head and neck; the mantle olive-coloured, with a band of deep black round the throat and over the ear-covers; the face, skull, cheeks, and throat are white, spotted or striped with a darker colour, and there are tawny tints upon the belly, becoming redder upon the sides. The beak is of a brilliant yellow; the feet leaden coloured, the eye reddish brown. In size this bird resembles our common bullfinch, its length being about eight inches, three of which belong to the tail. The wing measures three inches from the shoulder to the tip.

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All the varieties of Parrot-Bullfinch with which we are acquainted are inhabitants of the Himalayas. Jerdon tells us that the species we have just mentioned was seen by him in the Khana Mountains, at a height of about 5,000 feet above the level of the sea; and it has been observed by other travellers in Nepaul and Assam. "I found," he continues, "that they feed upon a variety of seeds, and saw a female with two or three young ones that strongly resembled her in colour; they were somewhat shy, but did not hide themselves, merely flying from tree to tree." Another species was found by the above-mentioned naturalist in the bamboo woods of the hilly districts of Nepaul, Sikkim, and Butan, where they feed upon all kinds of seeds. They flew about in small parties, and appeared to be somewhat timid, allowing themselves to be watched, but seeking shelter when pursued. We learn from Tickell that they readily devour corn, maize, and rice. "After eating," says this writer, "they perch upon the branches of the trees and bushes, and have no appearance of living a retired life, as is the case with the Timalias. In some respects they resemble other bullfinches."

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We are happily much better acquainted with the second tribe of the same family, the European species of which is named

THE PINE GROSBEAK.

The PINE GROSBEAK (_Pinicola enucleator_) deserves our notice, as being the largest of the Bullfinches. Its beak is vaulted on all sides, and the upper mandible somewhat hooked, in this respect differing from other finches; the margin is slightly curved, and the extreme tip of the under mandible rather blunted. The legs are short and strong, the toes powerful, the claws large, and the wings, when closed, seldom reach beyond the first third of the tail; the latter is graduated to the centre. The Pine Grosbeak resembles the Singing Thrush in size, its length being from eight to nine inches, from three to three and a half of which belong to the tail; the breadth across the wings varies from thirteen to fourteen inches, and the wing measures four and a half inches from the shoulder to the tip. The plumage is rich, and somewhat straggling. In the old male birds, a pretty red shade predominates, whilst those of a year old are somewhat yellower; the throat is of a paler colour, and the wings marked with two crooked lines. The individual feathers are ash-grey, blackish along the shaft, tipped at the end with a red or reddish yellow, and dotted here and there in the middle with a darker shade; the edges, on the contrary, are somewhat lighter, thus producing a cloudy kind of marking. The wing and tail feathers are black, bordered with a light shade, these borders being much more distinct upon the shoulder-feathers. The beak is of a dirty brown, blackish at the tip, the legs greyish brown, and the eyes dark brown. This bird inhabits the northern countries of Europe and Asia, and in America there is a very similar species. As far as we can ascertain, the Pine Grosbeaks live during the summer alone, or in pairs, and only assemble during the winter in flocks, that may be seen flying over the northern woods or frequenting the solitary farms, returning at the commencement of spring to their retreats in the forests. Should a heavy fall of snow occur and compel them to migrate to more southern parts, the flocks will join each other, and that often in very considerable multitudes.

In the years 1790-93-98, and 1803, such enormous swarms of these birds appeared in the islands of the Baltic, that in the country about Riga some thousands of pairs were caught weekly for a considerable time. They were also very numerous in Russia during the winter of 1821, and have been more recently seen in great numbers in various parts of Germany. We have to thank these involuntary wanderers for nearly all the information we possess concerning their habits, for we are but little acquainted with their mode of life in their native wilds. Whilst with us, they fly about in flocks during the day, eat in company, and settle in the evening all together upon the same sleeping-place, their favourite haunts being the pine forests, and they seem to prefer those in which the underwood is composed of young juniper-trees. They do not frequent thick foliage, but fly over barren plains as rapidly as possible.

When these birds first come amongst us they are harmless, confiding creatures, who have not yet experienced the artifices of man, never offering to stir if a stranger or hunter approach the trees on which they are perched, and will stare at the gun destined for their destruction without thinking of flight, even should one of their companions be shot down from the same branch. Persons have tried successfully to catch them by means of snares fastened to the end of poles, by the aid of which they could be thrown over the heads of the birds; indeed, the clumsiest kind of trap is all that is required to catch these unsuspicious little wanderers. The most touching tales are told of the attachment of the Pine Grosbeak to its mate. On one occasion, three out of a party of four had been captured, when, to the astonishment of all, the fourth crept into the net in order to share the fate of its companions. It must not be imagined, however, that these birds are really foolish, for experience soon teaches them its lessons, and they become distrustful, shy, and cautious. In its habits the Pine Grosbeak often reminds us of the Cross-bill; it is essentially a tree-bird, being quite at home upon a branch, but uneasy and out of place upon the ground. It can climb skilfully from one bough to another, hopping with ease to tolerably distant branches. Its flight is rapid, and, like that of most finches, rather undulating, and it hovers before perching. Its voice is flute-like and expressive, resembling that of the bullfinch, and its song, which may be heard throughout the whole of the winter, is very varied and pleasing on account of its soft clear notes. In winter we do not hear it in perfection, as it is then low and disjointed; but in spring, when the male rouses all his energies to cheer his little mate, his tones would satisfy the most fastidious critic; it sings during the clear light summer nights of its native land, and is there called on that account "the Watchman." This bird has many other good qualities, and, owing to its gentle, confiding temperament, may be easily tamed if properly treated. It becomes, in a few days, accustomed to confinement, taking its food readily from the hand, and will allow itself to be stroked, or even carried about the room, all the time testifying its happiness and content. It is an interesting sight to see a male and female bird in one cage, for their tenderness towards each other is extreme; but, alas! in one point they are deficient--they do not survive the loss of their freedom for any considerable length of time, and pine away rapidly, especially when their keepers forget that these children of the north must have fresh cold air, and foolishly confine them in hot rooms. The birds that come to us prove themselves almost entirely insensible to cold, and are lively and cheerful in the most severe winter weather. If shut up in a warm, close chamber, they will climb uneasily around their cage, open their beaks and pant, thereby showing how unbearable and injurious they find the heat of such an unwonted climate. Under favourable circumstances they will live for a year in confinement; but their plumage does not retain its beauty after the first six months, turning yellow and losing its brilliancy. It is best to keep them, even during the winter, in an unwarmed room, or still better in a cage hung outside the house. In its native state the Pine Grosbeak feeds upon the seeds of the fir-trees, which it picks out of the open cones or gleans from the ground. It will also eat many kinds of seeds or berries, and looks upon green weeds and the buds of trees as dainties. Tame birds are fed with linseed, rapeseed, and juniper or mountain-ash berries; they require a considerable quantity of food, as they are large eaters. It would seem that in summer they live extensively upon insects, especially flies, and with these they probably feed their young.

We have but scanty knowledge of their manner of breeding. In one instance that came under our notice, the nest was made in a privet-bush about four feet high. It was very lightly built, and scarcely thicker than that of a hedge-sparrow, the outer wall being formed of dry stalks of plants, and the interior lined with horsehair. The brood consisted of four eggs of a beautiful bright blue, tinted at the broad end with reddish brown, and having a few chestnut-brown spots. In colour and marking they much resemble those of the Cherry Hawfinch. Only the female sits upon the eggs, but during her seclusion she is cheered by the song of her mate.

THE CARMINE GROSBEAK.