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полная версияPoachers and Poaching

John F.L.S. Watson
Poachers and Poaching

The dotterel and Norfolk plover are summer visitants. The former breeds upon the tops of the highest mountains, and rarely stays more than a few days during the times of the spring and autumn migrations. It is every year decreasing in consequence of the persistency with which it is hunted down for feathers for dressing flies. We have found it breeding upon Skiddaw, Sca Fell, and Helvellyn. The Norfolk plover, thick knee, or stone curlew, is a summer visitant, coming in small numbers, and being only locally distributed. It breeds in a few of the eastern counties.

December, with its frost and snow, its cold grey skies, and biting northern weather, always brings with it skeins of swans, geese, and wild-fowl. The heart of the fowler warms as he hears the clangour and wild cries of the birds afar up, for although he cannot see their forms, he easily determines the species. He hears the gaggle of geese, the trumpetings of wild swans, and the cry of the curlew as it hovers over the lights. Among the fowl that are driven down by stress of weather are wisps of snipe, and, although comparatively small, no game is dearer to the heart of the inland sportsman or shore-shooter. Four species of snipe are found in Britain, though one of these, the red-breasted or brown snipe, can only be looked upon as a rare straggler. The remaining three species are the common snipe, the great snipe, and the jack snipe. All snipe have a peculiar zig-zag flight, and this peculiarity renders them most difficult to kill. Bagging the first snipe constitutes an era in life of every sportsman, and is an event always remembered. Another characteristic of birds of this genus is the beauty and design of their plumage. The ground colour is streaked and pencilled in a remarkable manner with straw-coloured feathers, which enables the bird to conform in a marvellous manner to the bleached stalks of the aquatic herbage which constitutes its haunt. The arrangement is somewhat similar to that of the woodcock lying among its dead oak-leaves.

The common snipe is one of our well-known marsh birds, although drainage and better farming have not only restricted its breeding haunts, but have caused it to be less numerous. Still it probably breeds in every county in England, and our resident birds are augmented in numbers by bands of immigrants which annually winter within our shores. These mostly come from Scandinavia, and soon after their arrival may be seen dispersing themselves over the marshes in search of food. At this time they are exceedingly wary, and the alarm-note of a single bird will put every one up from the marsh. The startled cry of the snipe resembles the syllables "scape, scape," which is often a literal translation of what takes place before the gunner. The bird feeds on plashy meadows, wet moors, by tarns and stream sides, and on mosses which margin the coast. And this being so it is one of the first to be affected by severe weather. If on elevated ground when the frost sets in it immediately betakes itself to the lowlands, and when supplies fail here it soon starves, becoming thin and skeleton-like. Under ordinary circumstances the bird is a ravenous feeder, lays on a thick layer of fat, and is certainly a delicacy. Soon after the turn of the year snipe show an inclination to pair, one of them circling high in the air, and flying round and round over their future nesting site. It is now that they produce a peculiar drumming noise, caused as some say by the rapid action of the wings when making a downward swoop; while others assert that the noise is produced by the stiff tail feathers; others again that it is uttered by the bird itself. This "bleating" much resembles the booming of a large bee, and has given to the bird several expressive provincial names. To many northern shepherds the noise indicates dry weather and frost. The snipe is an early breeder, and in open seasons its beautiful eggs may be found by March or early April. These are laid in a depression among rushes or aquatic herbage, and have a ground colour of greenish olive, blotched with varying shades of brown. Incubation lasts only a fortnight, and the result of this are young which run as soon as they are hatched, and clothed in an exquisite covering of dappled down. The birds strongly object to any intrusion on their breeding haunts, though this presents a capital opportunity of hearing the peculiar sound already referred to. The male will be seen flying high in circles, and whenever he indulges the remarkable action of his wings in his curving descent the sound proceeds from him. Upon being hatched the young are immediately led to water and the protection of thick and dank herbage. Here, too, food is abundant, which for these tiny things consists of the lowest forms of aquatic life. It is interesting to watch snipe boring for food, and it is surprising what hard ground their admirably-adapted long mobile bills can penetrate. This is an exceedingly sensitive organ however, the outer membrane being underlaid by delicate nerve fibre, which infallibly tells the bird when it touches food, although far hidden from sight. The seeds which are sometimes found in birds of the snipe kind have come there not by being eaten, but attached to some glutinous food, and eaten accidentally.

The second species, the great snipe, long remained unknown as a British bird, owing to its being considered only a large variety of the bird above mentioned. Pennant was the first to elevate it to the rank of a species, and, once pointed out, its claim was admitted. The great snipe does not breed in Britain, and those killed here are mostly birds of the year, these occurring from early to late autumn. During a single season the writer shot three examples of this bird; one was flushed from turnips, the other two from a high-lying tussocky pasture—an ideal spot for hares, and for which we were on the look-out. In going away the great snipe is much slower than its common cousin, and is not given to zig-zaging to such an extent. It lies close, flies heavily, and on the wing reminds one very much of the woodcock. Unlike its congeners, it does not soon "plump," but flies straight away. "Solitary snipe" is misleading, as a pair are often found in company; whilst double snipe, woodcock snipe, and little woodcock are each expressive and descriptive. With regard to food and habit, this species has much in common with its congeners. It is usually found on high and dry situations from October to the end of the year, and seems to prefer loose soil to wet marshes, as the former give a greater variety of food. This consists of worms, insects and their larvæ, beetles, tiny land-shells and grit. When in season the birds are loaded with flesh and fat. Only a slight nest is constructed at breeding time, when four eggs are laid; these are olive-green with purplish-brown blotches. The bird is not known to breed with us, though it does in Scandinavia, and here it is sometimes known to tear up the surrounding moss with which to cover its back. This it does for the purpose of concealment, a proceeding which is sometimes practised by the woodcock. The following interesting fact is recorded by two gentlemen who have observed the bird in its breeding grounds. "The great snipe has a lek or playing ground, similar to that of some of the grouse tribe, the places of meeting, or spil-pads, being frequented by several pairs of birds from dusk to early morning. The male utters a low note resembling bip, bip, bipbip, bipbiperere, biperere, varied by a sound like the smacking of a tongue, produced by striking the mandibles smartly and in rapid succession; he then jumps upon a tussock of grass, swelling out his feathers, spreading his tail, drooping his wings in front of the female, and uttering a tremulous sbirr…. The males fight by slashing feebly with their wings, but the combat is not of long duration." As the characteristics of the great snipe become known, it will doubtless be recorded as occurring more frequently than it has been in the past. As has been suggested, it is most probable that in a big bag of snipe the rarer species may frequently have been overlooked, especially as the common snipe varies in size, perhaps more than any other bird.

The jack snipe is the smallest British species, and is only a winter visitant to this country. It breeds upon the tundras of the far north, and arrives here late in September. Unlike its congeners, it is usually seen singly, and it procures its food in the boggiest situations. It feeds much at dusk both morning and evening, and when satisfied retires a short distance upland, where among dry grass tufts it rests during the day. Its food consists of worms and other soft-bodied creatures; under favourable conditions it lays on much fat, and is considered a delicacy at table. Upon its first coming it makes for wet meadows, plashy uplands, and sea-coast tracts, although the weather regulates the altitude at which the bird is found. If severe frost sets in it leaves the hill-tarns for lower land, and seeks the protection of grass and rushes by the margins of streams. Open weather, however, soon drives it from the valleys. The jack snipe is very local in its likes, and will return again and again to the same spot; in ordinary seasons its numbers are about equal to those of the common snipe. It lies well to the gun, often until almost trodden on, and birds have been known to have been picked up from before the nose of a dog. It is more easily killed than any of its congeners, for although it flies in a zig-zag manner it invariably rises right from the feet of the sportsman. About April the birds congregate for their journey northwards, and there is no authentic record of the species having bred in Britain. Mr. John Wolley, an English naturalist, discovered in Lapland the first known eggs of the jack snipe. And this is how he relates the interesting find: "We had not been many hours in the marsh when I saw a bird get up, and I marked it down. The nest was found. A sight of the eggs, as they lay untouched, raised my expectations to the highest pitch. I went to the spot where I had marked the bird, and put it up again, and again saw it, after a short low flight, drop suddenly into cover. Once more it rose a few feet from where it had settled. I fired, and in a minute had in my hand a true jack snipe, the undoubted parent of the nest of eggs! In the course of the day and night I found three more nests, and examined the birds of each. One allowed me to touch it with my hand before it rose, and another only got up when my foot was within six inches of it. The nest of the 17th of June, and the two of the 18th of June, were all alike in structure, made loosely of dried pieces of grass and equisetum not at all woven together, with a few old leaves of the dwarf birch, placed in a dry sedgy or grassy spot close to more open swamp."

 

At one time snipe were commonly taken in "pantles" made of twisted horsehair. These were set about three inches from the ground, and snipe and teal were mostly taken in them. In preparing the snares the fowler trampled a strip of oozy ground, until, in the darkness, it had the appearance of a narrow plash of water. The birds were taken as they went to feed in ground presumably containing food of which they were fond.

CHAPTER IX.
WATER POACHERS

If trout streams and salmon rivers are ever more interesting than when the "March-brown" and the May-fly are on, surely it must be when the fish are heading up stream for the spawning grounds. Then the salmon leave the teeming seas and the trout their rich river reaches for the tributary streams. At this time the fish glide through the deep water with as much eagerness as they rushed down the same river as silvery samlets or tiny trout. Maybe they stay for a short time at some well-remembered pool, but the first frosts remind them that they must seek the upper waters. A brown spate rolling down is a potent reminder, and they know that by its aid the rocks and weirs will be more easily passed. If the accustomed waterways are of solid foam the fish get up easily, but the soft spray gives them little hold. Let us watch them try to surmount the first obstacle; and here, by the White Water rocks it is a silvery sight to see the salmon "run." There is a deafening roar from the waterfall, and the almost impalpable spray constitutes a constant maze of translucent vapour. Ever and anon a big fish throws its steel-blue form many feet above the water, endeavouring to clear the obstacle. Many times it is beaten back, but at last it gains a ledge, and by a concentrated effort manages to throw itself into the still deep water beyond. Instead of leaping, the female fish try to run through the foam and on from stone to stone until a last leap takes them over. Where no passes exist many fish are picked up dead, the majority of these prove to be males, and this preponderance is also noticeable upon the breeding grounds. The spawning redds are selected where the tributaries are clear and pure—where there is bright gravel and an entire absence of sediment. Here the fish settle down to their domestic duties, and their movements seem to be regulated by a dulling stupor. This facilitates observation, but it also assists the poacher in his silent trade. Once settled, the female fish scoops out a hollow in the sheltering gravel, and is closely attended by her lord. Whilst spawning is proceeding, observe with what care he attends her, and in what evolutions he indulges. He rises and falls, now passing over, now under her, and settling first upon this side, then upon that. Observe, too, how he drives off the young unfertile fish which are ever lying in wait to devour the spawn. The eggs are deposited at intervals in the sand, and when the milt has been fertilised the whole is covered over, there to remain until spring. The salmon deposits nearly a thousand eggs for every pound of its live weight, and from the quantity of spawn in some salmon rivers it would seem that nothing which man could do—save pollution—would have any appreciable influence upon the increase of the species. The fecundity of trout is even greater than that of salmon, while a tiny smelt of only two ounces contains upwards of thirty-five thousand eggs, and even these are as nothing compared with the rate of increase of several marine and "coarse" fish. An individual cod has yielded more than six million; a turbot fourteen million; and a twenty-eight pound conger eel fifteen million eggs.

The eggs of salmon are nearly as large as the seed of a garden pea, and those of good trout only slightly less. The ova is of a delicate salmon colour and the cell-walls are semi-transparent—so much so that the embryo shows plainly through. Although delicate in appearance they are elastic and capable of sustaining great pressure, and an egg thrown upon a flat surface will rebound like an india-rubber ball. The economy of the extreme prolificness of the sporting fishes of Britain can best be understood when we come to consider the host of enemies which beset both salmon and trout in the very first stages of their existence. Nature is prolific in her waste, and a whole army of nature's poachers have to be satisfied. So true is this that the yearly yield of the largest salmon-producing river in the kingdom is computed at about the produce of one female fish of from fifteen pounds to twenty pounds in weight; the produce of all the rest being lost or wasted. Sometimes a single ill-timed spate will destroy millions of eggs by tearing them from the gravel and laying them bare to a whole host of enemies.2 These enemies are in the air, on the land, in the water, and nothing short of an enumeration of them can convey any idea of their numbers and wholesale methods of destruction. In addition to the yearling salmon and trout which for ever haunt the skirts of the spawning grounds, there are always a number of mature unfertile fish which for a part of the year live entirely upon the spawn. An instance of this is recorded by a river watcher on the Thames, who states that while procuring trout ova in a stream at High Wycombe, he observed a pair of trout spawning on a shallow ford, and another just below them devouring the ova as fast as it was deposited by the spawner. The keeper netted the thief, and in its stomach was found upwards of two ounces of solid ova, or about three hundred eggs. Eels particularly root up the gravel beds, and the small river lamprey has also been seen busily engaged in the like pursuit. These have a method in going about their depredations that is quite interesting. Small parties of them work together, and by means of their suckers they remove the stones, immediately boring down after the hidden spawn. If a stone be too large for one to lift another will come to its aid, even four or five having been seen to unite their forces. It is a good-sized stone which can resist their efforts, and the mischief they do is considerable. Even water beetles and their larvæ must, on account of their numbers and voracity, come within the reckoning, and among the most destructive of these are water-shrimps and the larvæ of the dragon-fly. Have we not been told that while the loved May-fly is "on," all hours, meats, decencies, and respectabilities must yield to his caprice, so that the pink-spotted trout, rushing from every hover, may be lifted gently from its native stream to gasp away its life among the lush summer grass? But if the gauzy-winged fly is one of the loved likes of the trout, the former has its day, for none of the larvæ of water beetles is so destructive to spawn and fry as this. Pike and coarse fish are equally partial to the same repast, and even salmon and trout devour the young of their own kind. Waterfowl are among the trout-stream poachers, and the swan is a perfect gourmand. My swan and her crew (five cygnets) would dispose of two million five hundred thousand eggs in that time. Some of the best trout streams in the country have been depopulated of fish by these birds, and the Thames as a fishing river is now greatly suffering from the number of swans allowed upon it.3 Both wild and domestic ducks are destructive to spawn and almost live on the "redds" during the breeding season. We have more than once shot moorhens in autumn with spawn dripping from their bills, and the birds themselves gorged with it. The coot has been charged with the same crime, though as yet guilt has only been brought home to it with regard to coarse fish; and to the silvery bleak it is said to be particularly partial. The grebe or dabchick must be looked upon as an arrant little poacher not only of eggs and fry but of fish in every stage of growth. It is said that a pair of dabchicks will do more harm on a river than a pair of otters, which, however, is perhaps not so terrible as it sounds. Fourteen little grebes fishing about a mile of trout stream, as we have known, is overstepping the balance of nature, and would certainly injure the river; and Mr. Bartlett has stated that a pair of these birds which he kept in confinement cost the Zoological Society a considerable sum in providing small fish for them. Frank Buckland had a grebe sent to him which had been choked by a bullhead, and the same fate has not unfrequently befallen kingfishers and other aquatic feeders. The vegetarian water-voles may be written down innocent with regard to spawn, or at the worst "not proven." Our British voles are miniature beavers that haunt the water sides and lead a fairy-like existence among the osier-beds and lily-pads. They know but little of winter, and therefore of the spawning season, and their delectable lives are lived on through ever-recurring summers. Until lately naturalists knew but little of the life-history of the voles, and the country folk called them "water-rats" and "field-mice," and knew little beyond except that they tunnelled their meadow-banks. As the little creatures pass from one bank to another they swim fearlessly towards the observer, and when within a few yards of the side suddenly disappear and enter their holes from beneath. Much abuse has been heaped upon the vole for its alleged propensity for destroying ova, but as yet nothing has been proved against it. We have watched scores of these little creatures feeding on the succulent leaves of water-plants, but have never detected them searching the "redds" or taking trout fry. It has been asserted that voles feed upon flesh when opportunity offers, but perhaps we cannot better vindicate their general character in this respect than by relating an incident which has occurred annually for some years past. In a quiet pool known to us, a couple of moorhens have annually hatched and reared one or more broods under the shadow of an old thorn-tree, the nest being interwoven with one of the lower boughs which floats on the surface of the water. Under the roots a pair of voles have annually brought forth several young families; and yet perfect amity seems to exist between the birds and the rodents. We have seen the eggs lying for hours uncovered and unprotected, and at other times the young birds, not more than a few hours old, swimming about in the water when the voles were constantly feeding, crossing and recrossing from bank to bank. If voles were addicted to killing birds the downy young of the moorhen would have afforded tender morsels, and have been easily obtained in a small confined pool ere they were able to take wing.

 

When the eggs of salmon and trout have been submitted to the action of clear running water for a few months they begin to hatch. Prior to this the young fish may be seen inside packed away in a most beautiful manner. The embryo increases in bulk until on some warm April day the tiny fish bursts its shell and finds itself in a wide world of waters. Individual eggs may be seen to hatch, and the process is most interesting. First the shell splits at the part corresponding to the back. Then a tiny head with golden eyes appears, and after two or three convulsive waves of his little tail the now useless shells fall from off him. He seems to enjoy the watery element in which he finds himself, for away he swims as fast as his tiny fins and wriggling tail will carry him, round and round in a circle, until presently he sinks down again to the sheltering gravel, for the first time breathing freely by his delicate gills. Every young salmon and trout has a tiny umbilical sac attached, and upon the contents of which it must feed until it has learnt to look out for itself, a period of from six to eight weeks. Frank Buckland has stated that no other animal increases so rapidly at so little cost, and becomes such a valuable article of food as the salmon. At three days old it is nearly two grains in weight; at sixteen months it has increased to two ounces, or four hundred and eighty times its first weight; at twenty months old, after the smolt has been a few months in the sea, it becomes a grilse of eight and a half pounds, having increased sixty-eight times in three or four months; at two and three-quarter years old it becomes a salmon of twelve pounds to fifteen pounds; after which its increased rate of growth has not been satisfactorily ascertained, but by the time it becomes thirty pounds it has increased one hundred and fifteen thousand two hundred times the weight it was at first.

The only parts of a young salmon or trout which is fully developed immediately it leaves the egg are its eyes. These are golden with a silver sheen, and beautifully bright—the great aids in steering clear of an almost innumerable set of enemies which this new stage of existence brings. And it is really difficult to say whether these game fishes have more enemies when in the egg or after they are hatched. Of some of the former we have already spoken, and now let us look to the latter.

The heron is a great trout-stream poacher, and destroys quantities of immature fish. This has long been known, but the fact received striking confirmation from an incident which occurred at the rearing-ponds at Stormontfield. Here a heron was shot as it left off fishing, when it immediately disgorged fifty fry. In the trout stream the heron stands looking more like a lump of drift-stuff caught in the bushes than an animate object. Gaunt, consumptive, and sentinel-like, the bird watches with crest depressed, standing upon one leg. At other times it wades cautiously with lowered head and outstretched neck, each step being taken by a foot drawn gently out of the water, and as quietly replaced in advance. Occasionally the wader steps into a deep hole, but this causes not the slightest flurry. The walk is changed into a sort of swimming, and paddling deep in the water until the feet again touch firm ground. Woe to the trout or samlet that comes within range of the heron's terrible pike, for it is at once impaled and gulped down. This impalement is given with great force, and a wounded heron has been known to drive its strong bill right through a stout stick. If a fish is missed a sharp look-out is kept for its line of escape, and a stealthy step made towards it. Should the distance be beyond range of the bird's vision, a few flaps of the wings are tried in the eagerness of pursuit. Nothing from the size of fry to mature fish comes amiss to the heron, and the young whilst still in the nest consume great quantities. Their swallow is insatiable, though sometimes they gaff an individual which is difficult to dispose of. Shooting late one evening in summer we were standing by a stream the banks of which were riddled with the holes of water-voles. It was almost dark, when a large bird flapped slowly over the fields and alighted by the bank. It took its stand, and as we lay low its sketchy form was sharply outlined against the sky. It was a heron; and for an hour among the dank weeds and wet grass we watched it feed. After a prolonged struggle with some object in the water it rose. Just as it did so we fired, and running up to the winged bird were in time to see a live vole which it had disgorged. As an example of "the biter bit," it is related that a heron was seen one evening going to a piece of water to feed; the spot was visited the next morning, when it was discovered that the bird had stuck its beak through the head of an eel, piercing both eyes; the eel thus held had coiled itself so tightly round the neck of the heron as to stop the bird's respiration, and both were dead. Upon another occasion a heron is said to have swallowed a stoat, but in this case also the prey was promptly disgorged. An authoritative statement has been made to the effect that the heron's services in the destruction of pike, coarse fish, rats, and water-beetles may fairly be set off against its depredations in trout-streams. But to this we must dissent; and if a trout stream and a heronry are to flourish in the same neighbourhood, the former must be covered in with netting, especially during the spawning season.

Another bird which is an enemy to both salmon and trout in their fry stage is the black-headed gull. This bird with its laughing cry hovers over the stream and never lets slip an opportunity of snapping up a brown trout or silvery samlet that has left its place of refuge. The late Francis Francis was fully aware of this fact, and he set down both gulls and terns as most notorious offenders. A couple of hundred gulls will devour at least a thousand smolts per day; and the birds may be seen at Loch Lomond travelling to and from Gull Island and the burns all day, each with a trout or parr in its beak. This must have a considerable effect on the future supply of grilse in the Tweed.

As to what part the pretty white-breasted dipper plays in the economy of salmon rivers and trout streams naturalists are by no means agreed. Frank Buckland said that one might as well shoot a swallow skimming over a turnip-field as a dipper over the spawning beds. And this view of the dipper's economy we believe to be the right and just one. Last autumn we had occasion to walk over many miles of trout streams. In these, fish of every size were upon the gravel beds which constitute the spawning "redds." Almost at every turn the white chemisette of the brook bird glinted from some grey stone and went piping before us up stream. As many of these were seen actually rummaging among the pebbles, some few were shot for examination. Although the post-mortems were carefully conducted, no trace in any single instance of the presence of ova of either trout or salmon could be found, but only larvæ of water-haunting insects, roughly representing the four great families of trout-flies. In opposition to the above, however, it must be admitted that individual dippers have been seen with tiny fish in their bills, and even to feed their young ones upon them. Birds in confinement have also been fed upon minnows, but this penchant might be an acquired one. It may be asserted, then, that the ouzel has been known to eat fish, but that fish forms no chief portion of his food; and finally, that it would be quite incorrect to describe it as a fish-eating bird, and therefore as an enemy to salmon and trout. The birds will not long stay where the water is slow or logged; they must have the white foam, the torrent, the pebbly reaches, and the shallows. In fact, they could not obtain their food under conditions other than these. The mountain burns abound with various aquatic insects and their larvæ, and in limestone districts in innumerable fresh-water molluscs. As already shown, not only is the ouzel innocent of destroying eggs of salmon and trout, but it is indirectly beneficial to a fishery. It is well known that among the chief enemies to spawn are the larvæ known as caddisworms, that of the dragon-fly, May-fly and stone-fly, and also of the various water-beetles. Now all these have been found in the stomach of the dipper, and therefore it must confer a decided benefit on the salmon and trout streams which it haunts.

2"Sometimes while stealing along in a quiet deep channel but a few yards wide, worn through the rock, or between it and the green bank opposite, the spectator would marvel at the broad expanse of shingle or barren sand. Little would he wonder if, after a week's rain, he sought the same spot, when Tweed was coming down in his might, and every tributary stream, transformed for the nonce into a river, swelled the mighty flood. Then timber trees, sawn wood, dead animals, farming implements, even haystacks would come floating down, and the very channel of the river would be diverted, sometimes never to return to its ancient course. Sad was the havoc occasioned among the embryo spawn; torn from its bed, it would be carried down stream, to be devoured by the trout or the eel, or to perish amid the waste of waters. We felt on these occasions pretty safe. Our principal enemies were dispersed: the gulls sought worms in the ploughed uplands; the kingfisher and the solitary heron flew away to the smaller streams, where the less turbid water permitted them to see their prey. The cold, slimy, cruel eel, alone of all our enemies, was then to be dreaded. Crawling along at the bottom of the water, his flat wicked head pressed against the gravel, so as to escape the force of the stream, the wily beast would insinuate himself into every crevice or corner, where a small fish might have taken shelter, or a drowned worm be lodged, and all was prey to him." The Autobiography of a Salmon.
3"One had better throw open his pond or river to all the poachers in the district than indulge in a taste for swans. If any one doubts this, let him row up the Thames from Weybridge to Chertsey, or on to Laleham, during the latter end of the month of April or early in May, and take particular and special notice of what the swans are doing. If he has still any doubt, and likes to kill one or two and cut them open, he will solve his doubts and do a service at the same time; he may be fined for it, but he will certainly suffer for a good action and in a good cause. A swan can and will devour a gallon of fish-spawn every day while the spawn remains unhatched, if he can get it; and it is easily found. I leave the reader to calculate what the few hundreds (I might almost say thousands) on the Thames devour in the course of two or three months. Their greediness and voracity for fish-spawn must be witnessed to be believed. If this were not so, the Thames ought to swarm to excess with fish, whereas it is but poorly supplied. Here is a little calculation. Suppose each swan only to take a quart of spawn per diem, which is a very low average indeed; suppose each quart to contain fifty-thousand eggs (not a tithe of what it does contain). I am not speaking of salmon and trout here, their ova being much larger; suppose only two hundred swans (about a fourth, perhaps, of the number really employed) are at work at the spawn, and give them only a fortnight for the period of their ravages. Now what is the result we get? Why, a little total of one hundred and forty million. One hundred and forty million of eggs! Suppose only half of those eggs to become fish, and we have a loss of seventy millions of fish every year to the River Thames—a heavy price to pay for the picturesque, particularly when the reality may perhaps be doubled, or trebled, or even quadrupled." Francis Francis.
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