LE VAILLANT'S SNAKE BIRD (_Plotus Levaillantii_), like the preceding

species, is black upon the under side of the body, the neck is rust-red,

a stripe beginning at the eye, and extending down the sides of the neck

is blackish brown, and another below this white. The plumage on the back

is nut-brown, the long feathers are silvery white; the wings and tail are

black, the latter becoming somewhat lighter towards its extremity. The eye

is copper-colour, and the bare skin on the head yellowish green; the beak

is grey, and foot greenish blue. The length of this bird is thirty-three

inches, and its breadth forty-one inches and a half; the wing measures

thirteen inches and tail nine inches and a half. The female resembles her

mate, but is not so brightly coloured. Le Vaillant's Snake Bird inhabits

Africa, where it is to be met with on suitable sheets of water from 15°

north latitude to the Cape of Good Hope.

* * * * *

The CORMORANTS PROPER (_Phalacrocorax_) differ from the Snake Birds

principally in their more bulky shape and in the construction of their

bill. Their beak, which is of moderate length, is compressed at the

sides, rounded above, furrowed at the sides of the upper mandible, bent

downwards and strongly hooked at its tip. The legs are strong, and wings

short, with the third quill longer than the rest. The tail consists of

twelve feathers, and is shorter than that of the Darters. The Cormorants

are met with from the middle of Norway to the south of Europe, and during

the winter resort in countless multitudes to Africa. They are also very

abundant in Central Asia and North America, whence they wander as far as

the West Indies. The habitat of these birds is either the sea or fresh

water, according to circumstances. They frequently resort to large rivers

or lakes thickly skirted with trees, and sometimes make their appearance

in inhabited districts, from which it is difficult to drive them away.

An instance is even recorded in which they took up their quarters in the

centre of a town, selecting the church tower for their citadel. They visit

the sea in great numbers, and there seem to prefer certain localities,

generally selecting a situation where the coast is but little accessible

or where there are long reefs and ridges of rock. They are very abundant

on the coast of Scandinavia, as also in Iceland, the Faroe Islands, the

Hebrides, Orkneys, and other similar localities where they are little

disturbed by mankind. During the winter season they are met with in equal

abundance in more southern districts. In Greece they may be seen in great

numbers from one year's end to another, both upon the large lakes and in

the sea. In Egypt, they cover the lakes near the shore, as far as the

eye can reach, whence they every morning fly out to sea in countless

multitudes, returning in the evening. In Southern China and in India they

are equally numerous. Indeed, it may be said that they are met with in

every locality where water and fishes are to be had. In their habits and

mode of life the Cormorants present many peculiarities. They are very

sociable, and generally keep together in flights that are more or less

numerous. It is a rare occurrence to see one of them alone. During the

morning they are always indefatigably employed in fishing; about noon

they betake themselves to repose, and digest their food; towards evening

they are again busy fishing, and afterwards they resort to the places

where they sleep. These are generally lofty trees, growing at some little

distance inland upon islands in rivers or lakes, the same upon which they

subsequently build their nests; they are generally such as afford them

an extensive prospect in every direction, and allow them to fly away and

return with facility. The islands thus frequented are easily recognisable

at a distance by the thick covering of nascent guano by which the ground

is everywhere hidden; indeed, they would soon literally become beds of

that material had it a Peruvian sun to dry, or as Scheffel says, "purify"

it. Similar deposits are likewise to be seen on islands in the sea, which

seldom fail to arrest the attention of the passing mariner. Their history,

however, is quite intelligible, and their appearance remarkable when they

are densely covered with Cormorants, sitting in close ranks like regiments

of soldiers, tier above tier, all turned in the same direction with their

faces towards the sea; thus presenting a strangely picturesque scene,

for although they are stationary, they are by no means motionless; each

of them is constantly moving its head, spreading its tail, or stretching

out its wings, so as to give an appearance of animation to the whole

assemblage. For a single individual among them to remove from the place

where it stands without flying away altogether is an impossibility, so

densely are they crowded together. It is asserted by some that these

birds can only walk while propping themselves up with their tails; this,

however, is not correct; their walk, it is true, is but a clumsy waddle,

still it enables them to get over the ground with tolerable quickness.

Upon the branches of trees the Cormorants are much more at home than on

level ground; nevertheless, like the Snake-necks it is only when swimming

or diving in the water that they show their real capabilities. Should

a boat approach the rock upon which hundreds of them have taken their

station, they first begin to show symptoms of uneasiness by stretching out

their necks and moving their heads; they then begin a sort of restless

shuffling backwards and forwards, and ultimately they take flight; a

few of the assembled multitude rise into the air, flying at first with

fluttering wings, but they soon sweep away, gliding straight forward to

a considerable distance, or rise upwards in circles high into the air;

the majority of them, however, spring at once into the sea, like so many

frogs. Here they instantly dive, and when they come up again may be seen

a considerable distance off, peering at the boat with their little green

eyes and ready to dive again, in an instant, should they think such a

course conducive to their safety. The Darters unquestionably swim and dive

more dexterously, but it is questionable whether any other birds can excel

the Cormorants in this respect. They progress so rapidly under the water,

that a boat manned with strong rowers is unable to overtake them; they

dive likewise not only to a great distance, but to a considerable depth,

and when they come up, they simply take breath and at once dive again.

When chasing their prey beneath the surface they stretch their bodies

quite straight, and by powerful strokes of their feet, dart through the

water with arrow-like swiftness.

That these birds possess a good deal of intelligence is proved by the

fact that in China great numbers of tame Cormorants are taught to catch

fish for the benefit of their owners. Fortune was informed by one of

these Chinese fishermen that the birds so employed are kept in a state of

captivity from the moment of their birth, and that the eggs from which

they are obtained are incubated by barn-door fowls. When old enough they

are taken to the water-side, and there carefully taught to obey their

master's commands, and to bring to him the fishes that they procure. Upon

inland waters the presence of Cormorants is a very serious matter, seeing

that they destroy the fish in incredible quantities. Their voracity is

almost beyond belief; a single Cormorant, when it can get them, will

eat as many fishes as a Pelican. Although Cormorants generally prefer

to build their nests upon trees, when these are not to be found they

content themselves with cavities and projections among rocks or places

of a similar description. In inland situations, or where the woods come

down almost to the sea, they often make their appearance in rookeries and

heronries, and after expelling the Rooks with little trouble, and the

Herons after long-contested battles, proceed to take possession of their

nests, to which they add a few materials of their own selection, and at

once begin to lay their eggs. Should they remain in undisturbed possession

of the invaded locality for a year or two, they are only to be got rid

of with the greatest difficulty. In the year 1812, says Naumann, four

pairs of Cormorants made their appearance in Lutzenburg, not far from the

sea-coast, and built their nests in a wood upon a very high beech-tree,

which had been for several years the resort of Rooks and Herons. After

driving away the Herons, whose nests they took possession of, they each

proceeded to rear two broods, one in May, the other in July, and when

they left the place about the end of autumn, they numbered about thirty

individuals. In the spring of the following year, these repeated their

visit, and continued to return every year in still increasing numbers,

until it was estimated that there were at least 7,000 brooding pairs

assembled in the neighbourhood. Boje counted fifty of their nests in a

single tree, the multitudes of them constantly flying to the sea and

returning again seemed to fill the air, and the noise they made was

positively deafening; the trees upon which they assembled were white with

filth, and the whole place stank in consequence of the quantities of

putrid fishes fallen from their nests. It was only after several years of

unabated exertion that they were at length destroyed or driven away.

The Cormorants generally make their appearance in their breeding-places in

April, and set about preparing their nests with great zeal. Towards the

end of the month, they lay three or four narrow eggs, of a blueish green

colour, but generally incrusted with calcareous deposit. The two sexes sit

by turns for about four weeks, and when the young are hatched feed them

with indefatigable perseverance. Being thus abundantly provided for, the

nestlings grow rapidly; the old birds behave very affectionately towards

their progeny, but when danger threatens will not stay to defend them,

at least from their human enemies. Whenever the old birds visit their

nests, they are literally full to the throat with the food that they

have procured; each of them disgorges on the borders of the nest several

dozens of small fishes, which are immediately appropriated by the hungry

occupants. Many, however, fall upon the ground, and as no Cormorant thinks

it worth while to pick them up, they are left to taint the atmosphere.

Towards the end of June the young birds fly away, and the old ones begin

to rear a second brood. The chase after Cormorants is a very favourite

amusement with the zealous sportsman, although the birds when killed are

of no use whatever. Their watchfulness and cunning when they are at large

are calculated to test his utmost perseverance and caution. Near the trees

where they build their nests, however, they are very much more easily

destroyed, and still more readily in their eyries; their destruction,

indeed, is so simple that it becomes almost a matter of necessity. But

here the sport loses its charms, and the battues that are organised

against them assume very much the appearance of a massacre; every one who

can procure a gun hastens to the scene of action, and multitudes of the

birds are annually slaughtered. In this country the flesh of the Cormorant

is regarded as uneatable; the Laplanders, however, and also the Arabs, are

of a very different opinion, and consider it, on account of its fatness,

to be an especially dainty kind of food.

[Illustration: THE CORMORANT (_Phalacrocorax carbo_). ONE-FIFTH NATURAL

SIZE.]

THE COMMON CORMORANT.

The COMMON CORMORANT (_Phalacrocorax carbo_) is from thirty-five to

thirty-seven inches long, and from sixty to sixty-four broad. The length

of wing is fourteen to fifteen inches, and of tail six and a half to

seven inches. The plumage on the top of head, neck, breast, belly, and

rump is of a glossy blackish green, with a slight metallic lustre. The

fore part of the back and upper surface of the wings brown with a bronze

shade. Owing to the dark margins of the feathers, these parts have

the appearance of being imbricated: quills and tail-feathers black; a

white patch commencing behind the eye surrounds the throat. The eye is

sea-green; beak black, with yellowish base; the bare skin on neck and face

is yellow; and foot black. During the breeding season the Cormorants, more

especially the males, have delicate white feathers on the head; these,

however, soon disappear. The young are more or less grey; the upper parts

of the body being dark, with the imbricated appearance above alluded

to; the under side is yellowish or light grey. This species is commonly

found on all the rocky parts of the British coast. The nests are placed

on high cliffs, many birds congregating together and living harmoniously.

The nest is large, and composed of sticks and a mass of coarse grass and

seaweed, sometimes a foot high. The rough oblong eggs are from four to

six in number, of a chalky white and pale blue colour. In the course of a

few days after hatching, the young are able to take to the water. "These

birds," says Yarrell, "are frequently seen sitting on posts, rails, or

leafless trees by the water-side, when, if a fish should move on the

surface within their sight, it is pounced upon and caught to a certainty.

An eel is a favourite morsel with him, and a Cormorant has been seen to

pick up an eel from the mud, return to the rail he was previously sitting

upon, strike the eel three or four hard blows against the rail, toss it up

into the air, and, catching it by the head in its fall, swallow it in an

instant."

"In China the bridges across the Min, at Fuhchau, may often be seen

crowded with men viewing the feats of the tame fishing Cormorants. These

birds look at a distance about the size of a Goose, and are of a dark

dirty colour. The fisherman who has charge of them stands upon a raft,

about two feet and a half wide and fifteen or twenty feet long, made out

of five large bamboos of similar size and shape, firmly fastened together.

It is very light, and is propelled by a paddle. A basket is placed on it

to contain the fish when caught. Each raft has three or four Cormorants

connected with it. When not fishing they crouch down stupidly on the raft.

"The fisherman, when he wishes to make a Cormorant fish, pushes or throws

it off the raft into the water. If it is not disposed at once to dive and

seek for fish, he beats the water with his paddle, or sometimes strikes

the bird, so that it is glad to dive and get out of his reach. When it

has caught a fish it rises to the surface, holding it in its mouth, and

apparently striving to swallow it. A string tied loosely around its neck

or a metallic ring effectually prevents swallowing, except perhaps in

the case of very small fish. It usually swims directly for the raft. The

fisherman on seeing the prize paddles towards it with all speed, lest it

should escape from the bird. Sometimes the fish is a large one, and there

is evidently a struggle between it and the Cormorant. The fisherman, when

near enough, dexterously passes a net-like bag, fastened to the end of a

pole, over the two, and draws them both on the raft. He then forces the

fish from the grasp of the bird, and, as if to reward the latter for its

cleverness and success, gives it a mouthful of food, which it is enabled

to swallow on his raising the ring from the lower part of its neck. The

bird, if apparently tired out, is allowed to rest awhile on the raft,

and then it is pushed off again into the water and made to dive and hunt

for fish as before. Sometimes the Cormorant, from imperfect training,

swims away from the raft with the fish it has caught. In such a case the

fisherman pursues and speedily overtakes the truant. Sometimes, it is

reported, two or three Cormorants assist in securing a large and powerful

fish, and occasionally two quarrel together for the fish one has taken,

or one pursues the other for the fish in its mouth. At such times the

interest of the spectators on the bridge increases to noisy shouting.

The bird is provided with a sort of pouch or large throat, in which the

small fish are entirely concealed, while the head or tail of the larger

fish protrudes from its mouth. It is only at or near full tide that these

birds are successful in catching fish under and near the bridges, as then

the water is deep and comparatively still, and the fish seem to abound in

the vicinity more than at low-tide. At such times there are frequently

several rafts with Cormorants fishing near the bridges. The skill of the

fisherman in propelling his craft, and the success of the bird in catching

the fish are attested by the delighted curiosity and animated interest of

the spectators."

* * * * *

The PELICANS (_Pelecani_), the largest and most striking members of

this order, are at once recognisable by their enormous beak, furnished

underneath with a capacious bag, and strongly hooked at its extremity.

The upper mandible, which is remarkably depressed from its origin to its

apex, is moderately broad, and rounded at the point; the culmen forms a

conspicuous keel, running along the entire length of the upper jaw, and

at its termination bends down to form the strong claw-like hook at the

extremity. The lower mandible is exceedingly weak and slender, consisting

of two long lateral branches, only joined to each other towards the apex,

and enclosing between them a very capacious bag, formed by a dilatable

expansion of the throat. In comparison with the above most characteristic

features, the rest of the structure of the bird is to the ornithologist of

secondary importance; it is, however, very peculiar. The body is large and

cylindrical, the neck long and slender; the feet are small, toes long, and

connected by a broad web. In the large broad wing, the third quill exceeds

the rest in length; the tail, which is short, broad, and rounded, consists

of twenty or twenty-four feathers. The plumage is thick, but remarkably

hard and stiff; besides the almost naked sac beneath the throat, there is

a considerable space around the eye completely denuded of feathers. The

two sexes resemble each other very closely, but considerable differences

serve to distinguish the old birds from the young.

Pelicans inhabit the torrid regions of the earth, but are also found to a

considerable distance within the limits of the temperate zone. In their

habits and mode of life, the different groups nearly resemble each other,

and we shall therefore confine ourselves to a description of two species

met with in Europe.

None but those who have travelled in Egypt and North Africa can form any

idea of the vast numbers of fish-eating birds that there crowd the shores

of every lake and river. Upon all the Egyptian lakes along the course

of the Nile, during the period of its inundation, and still further to

the south, along the banks of the Blue and White Nile, as well as on the

shores of the Red Sea, Pelicans occur in such immense flocks that the eye

is unable even to estimate their extent. Over a considerable surface of

country they literally cover the quarter, or the half, of every square

mile. When they are swimming out upon the lakes, they look like immense

beds of water-lilies. When they come out of the water to sit upon the

shore, more especially if it be upon one of the islands, and sit in the

sunshine preening their feathers, they look at a distance like a vast

white wall, and when they retire to sleep, all the trees upon the island

are so thickly covered with them that they have the appearance of blossoms

without a single green leaf. To meet a small flock of about ten or a

dozen is an unusual occurrence, but to see hundreds or thousands together

is a very ordinary spectacle. As the spring approaches, these enormous

hosts are in some measure broken up. Many which during the winter season

congregated together make their way to Southern Europe, where they breed,

but numbers of them are left behind. In selecting the place of their

sojourn, these birds seem to make no difference between salt water and

fresh; they frequent both in almost equal numbers, but the depth of the

water is to them a matter of considerable importance.

Cassell's book of birds; vol. 4 · 第 32 / 45 段