Country Walks of a Naturalist with His Children Part 4

WALK VII.

JUNE.

This morning, before we started for our walk, we went to look at a hedgehog which had been brought to us the preceding day. We discovered that the animal, in the course of the night, had crept into a bag with a quant.i.ty of bran in it, and that there were four little ones with her. There they were as snug as possible, the mother and little urchins! Very curious little animals too these young hedgehogs. The spines or p.r.i.c.kles were nearly white and soft, and were not spread over the whole body, but arranged in rows down it. The appearance was that of a plucked duckling when it is what is called "penny." They were perfectly blind, and the pa.s.sage of the ear was quite closed; they uttered faint, puppy-like cries. I was desirous to try and rear them; but I had grave doubts about the old one, for those who have attempted to rear young hedgehogs have generally found that the mother ate her offspring. We removed her, young and all, to another place, giving them plenty of straw and supplying bread and milk for the old one. Buffon, amongst others, relates "that he had repeatedly placed the mother with the young in a place of confinement; but that, instead of suckling them, she invariably killed and devoured them, notwithstanding that she was provided with plenty of food."

However, we determined to give our young urchins a chance, and hoped the mother hedgehog would be favorably disposed towards her offspring; so we now left her undisturbed. w.i.l.l.y wished to know whether hedgehogs were injurious creatures, for "you know, papa," he said, "that country lads and gamekeepers always kill them whenever they have a chance." I am convinced that hedgehogs do much more good than harm, by the destruction they cause to insects, slugs, snails, field-mice, and other pests of the farm. There is a foolish idea in the minds of the uneducated that these animals suck cows. You have only to laugh at such an absurdity; but I doubt you will scarcely ever succeed in persuading such people that the idea is a ridiculous one, and utterly unsupported by fact. Hedgehogs will undoubtedly destroy eggs, and one can understand why gamekeepers wage war against them, fearing for the safety of the eggs or young birds of their favorite partridges or pheasants. This is natural. I suspect, however, that hedgehogs seldom molest the nests, and that the injury they do in this respect is very small. "But you know, papa," said Jack, "that they will eat young birds. Do you not remember the dead sparrow we once gave to a hedgehog, and how furiously he went at it, and how soon he ate it all up except the feathers." "Yes," added w.i.l.l.y, "and do you not also remember our putting a toad in the same box with a hedgehog? Oh! how angry he seemed, and how savagely he shook the unfortunate toad! He did not, however, seem to like the flavour, and soon gave up the fight." Hedgehogs will certainly destroy young birds; but we must remember to set the good any animal does against the harm, and strike the balance; and, as I said, I suspect in this case the good will largely preponderate. Hedgehogs are extremely fond of beetles; they seize on them with great earnestness, and crack them with as much delight as you lads crack nuts. Hedgehogs are sometimes kept in houses for the purpose of eating the c.o.c.kroaches so often abounding in kitchens. Snakes are also devoured by hedgehogs. The late Professor Buckland, having occasion to suspect that hedgehogs sometimes preyed on snakes, "procured a common snake and also a hedgehog, and put them in a box together. Whether or not the latter recognised its enemy was not apparent; it did not dart from the hedgehog, but kept creeping gently round the box. The hedgehog was rolled up, and did not appear to see the snake. The professor then laid the hedgehog on the snake, with that part of the ball where the head and tail meet downwards, and touching it. The snake proceeded to crawl; the hedgehog started, opened slightly, and seeing what was under it gave the snake a hard bite, and instantly rolled itself up again. It soon opened a second, and again a third time, repeating the bite. This done, the hedgehog stood by the snake's side, and pa.s.sed the whole body of the snake successively through its jaws, cracking it, and breaking the bones at intervals of half an inch or more, by which operation the snake was rendered motionless. The hedgehog then placed itself at the tip of the snake's tail, and began to eat upwards, as one would eat a radish, without intermission, but slowly, till half of the snake was devoured.

The following morning the remaining half was also completely eaten up." When rather young these animals make very interesting pets; they soon become tame, and will allow you to stroke their cheeks. You remember our placing a hedgehog on the study table, and seeing how it got off on to the ground. It came to the edge, and threw itself off, coiling up its body partly as it fell; the elastic nature of its p.r.i.c.kly covering enabling it to bear the shock of the fall without the slightest inconvenience.

[Ill.u.s.tration: GREAT GREY SHRIKE, OR BUTCHER BIRD, WITH ITS VICTIMS--SHREWS AND BLUE t.i.tMOUSE.]

Let us go on the moors again, and watch the coots and water-hens in the reedy pools near the aqueduct. Do you see that great t.i.t on a branch of this poplar? He is actually at work doing a bit of butchery on a small warbler. See how he is beating the poor little fellow on the head; he wants to get at his brains. "Are there not birds called butcher-birds?" asked w.i.l.l.y, "that fix their victims on thorns, and then peck off their flesh? Shall we see any of them?" There are three kinds of butcher-birds that have been known to come to this country.

Two kinds are very uncommon, and we are not likely to meet with any of them in our walks. I may as well, however, tell you something about them; but, as I have no personal knowledge of the habits of any of the species, I must get my information from other sources. The great grey shrike, the red-backed shrike, and the woodchat shrike, are the three species of the family occurring in Great Britain; the red-backed shrike is the only tolerably common one, arriving in this country late in April, and quitting it in September. Mr. John Shaw tells me this bird visits the quarry grounds at Shrewsbury every spring, and an early riser, if he goes there, can see these birds readily. Mr.

Yarrell says that the great grey shrike is only an occasional visitor to this country, and is generally obtained between autumn and spring.

Its food consists of mice, shrews, small birds, frogs, lizards, and large insects. "After having killed its prey, it fixes the body in a forked branch, or upon a sharp thorn, the more readily to pull off small pieces from it." The following remarks are by a gentleman who had one of these birds in confinement:--"An old bird of this species,"

he says, "taken near Norwich in October, 1835, lived in my possession twelve months. It became very tame, and would readily take its food from my hands. When a bird was given it, it invariably broke the skull, and generally ate the head first. It sometimes held the bird in its claws, and pulled it to pieces in the manner of hawks, but seemed to prefer forcing part of it through the wires, then pulling at it. It always hung what it could not eat up on the sides of the cage. It would often eat three small birds in a day. In the spring it was very noisy, one of its notes a little resembling the cry of the kestrel."

It is a cunning as well as a bold bird. It is said that by imitating the notes of some of the smaller birds it calls them near it, and then pounces upon some deluded victim. The shrike is used by falconers abroad for trapping falcons; "it is fastened to the ground, and by screaming loudly gives notice to the falconer, who is concealed, of the approach of a hawk." You will notice in any picture of a shrike how admirably adapted is its curved beak for butchering purposes. The red-backed shrike "frequents the sides of woods and high hedgerows, generally in pairs, and may frequently be seen perched on the uppermost branch of an isolated bush, on the look out for prey. The males occasionally make a chirping noise, not unlike the note of the sparrow." It also imitates the voice of small birds. Mr. Yarrell says "the food of the red-backed shrike is mice, and probably shrews, small birds, and various insects, particularly the common May-chaffer. Its inclination to attack and its power to destroy little birds has been doubted; but it has been seen to kill a bird as large as a finch, and is not unfrequently caught in the clap-nets of London bird-catchers, having struck at their decoy-birds;" and Mr. Hewitson says--"Seeing a red-backed shrike busy in a hedge, I found, upon approaching it, a small bird, upon which it had been operating, firmly fixed upon a blunt thorn; its head was torn off, and the body entirely plucked."

"What an amazing quant.i.ty of little lady-bird beetles there are on this hedge-bank," said May. "The ground is almost red with them." Yes, it is a very common, but very pretty species. You see there are seven black spots on its red wing-covers, three on each, arranged triangularly, and one at the top of the wing-covers, just at the point where they meet. "Are these insects injurious, papa?" asked w.i.l.l.y; "you say there are so many insects that are. I do hope the little lady-birds do no mischief." I am happy, then, to tell you that they are as useful as they are pretty. You all know what are called plant-lice, those nasty green or black flies called Aphides, which cover the leaves or branches of so many trees and flowers, and do most terrible mischief. Well, the lady-birds, both when they are larvae and when they are beetles, eat these pests, and help to keep their devastating swarms in check. I have frequently seen an aphis in the mouth of a lady-bird; and the larva, a curious six-footed grub, about the third of an inch long, which you may often see late in the summer and the autumn, is still more fond of aphis food. Mr. Curtis says two lady-birds cleared two geranium plants of aphides in twenty-four hours. The species we are looking at is the "seven-spotted lady-bird;"

there is another very common kind, whose scarlet wing-cases have one black spot on the centre of each. This species is subject to considerable variety; it is called the "two-spotted lady-bird." There is another you may often find; it is small and yellow, with eleven spots on each wing-cover. This is called the "twenty-two-spotted lady-bird;" it is an elegant little creature. It is interesting to note how the observation of some particular animal has led naturalists to the choice of their favorite study. Mr. Gould tells us that his first inclination to the study of birds arose from his father having once lifted him up to peep into a hedge-warbler's nest. His admiration for the beautiful blue eggs led him to devote his time to ornithology, or the study of birds. If I remember rightly, Kirby's mind was directed to the study of insects by noticing the wonderful vitality shown by a little lady-bird beetle, which, after having been immersed twenty-four hours in spirits of wine, on being taken out actually flew away. "What is the meaning," asked Mary, "of the nursery rhyme about the lady-bird?

Lady-bird, lady-bird, fly away home, Your house is on fire, and your children will burn?"

Indeed, I cannot tell you. There are different versions of the old song. One runs thus:

Lady-bird, lady-bird, fly away home; Your house is on fire, your children at home, All but one that lives under the stone,-- Fly thee home, lady-bird, ere it be gone.

In Yorkshire and Lancashire it is--

Lady-bird, lady-bird, fly thy way home, Thy house is on fire, thy children all roam, Except little Nan, who sits in her pan, Weaving gold laces as fast as she can.

The names of Lady-bird, Lady-cow, no doubt originated from the general reverence for this insect and its dedication to the Virgin Mary. In Scandinavia this little beetle is called "Our Lady's Key-maid," in Sweden "The Virgin Mary's Golden Hen." Similar reverence is paid in Germany, France, England, and Scotland. In Norfolk it is called Bishop Barnabee, and the young girls have the following rhyme, which they continue to recite to it placed on the palm of the hand, till it takes wing and flies away.

"Bishop, Bishop Barnabee, Tell me when my wedding be; If if be to-morrow day, Take your wings and fly away!

Fly to the East, fly to the West, Fly to him that I love best."

The word barnabee or burnabee, or, as Southey writes it, burnie-bee, no doubt has reference to the burnished or polished wing cases of the insect.

Let us now look out for the coots and water-hens, which love to dabble amongst the weeds of these pools, and to hide amongst the hedges and bulrushes that so thickly skirt them. See how rapidly the swifts or "Jack-squealers," as the country folks call them, are gliding by; you remember when we were noticing the swallows and martins that we thought of the swifts. Look at the beautiful scythe-like form of the wings; the tail, you see, is slightly forked; but the bird has the power of bringing the feathers together, so that sometimes you cannot see its cleft form. I generally notice swifts in the neighbourhood about the 5th of May; this year Mr. John Shaw tells me he saw some in Shrewsbury as early as the 23rd of April. Although they come to us the last of the swallow family, they leave us the soonest. By the middle of August most of the swifts will have left us.

This bird has remarkably short legs; and I remember more than once taking one off the ground when I was a boy at school, for unless it is raised a little above the level of the ground, it finds it very difficult to mount upwards by reason of its extremely short legs and long wings. If we had a swift in our hands, I could point out how it differed from the rest of the swallow family in the structure of its feet; in the other members the four toes are arranged three before and one behind; in the swift all the four toes are directed forwards.

There is another kind of swift, the "white-bellied swift," which has, on a few occasions, been noticed in this country. It is rather larger than the common swift, and has wings of greater length, and can fly even more rapidly. Hark! I hear the noise of a coot proceeding from the reeds of a pond. I dare say if we keep quite still we shall get a glimpse of her. There she comes; and do look, a lot of young ones with her; little black downy things they are, as we should see were we near enough to examine them. The old birds have a naked white patch on the forehead, and are therefore called bald-coots. You can see the white patch now she faces us and the sun is shining; the body is a dingy black tinged with dark grey; you notice a little white about the wings. The feet of the coot are curiously formed, each of the four toes is partly webbed, having a membrane forming rounded lobes; the claws are very sharp, and the bird does not hesitate to make use of them if you catch hold of it carelessly; so Col. Hawker gives the following caution to young sportsmen--"Beware of a winged coot, or he will scratch you like a cat."

I never saw a coot dive; and think it seldom does; water-hens, every one knows, are frequent divers.

The old bird is pulling up some of the weeds of the pool for the young ones; how carefully she attends to them; the heads of the little ones are nearly naked, and of a bright orange colour mixed with blue; but this brilliant colouring lasts only a few days. The nest is made of broken reeds and flags, and hidden amongst the tall rushes and edges in the water.

Bewick mentions the case of a coot having built her nest among some rushes, which were afterwards loosened by the wind, and of course the nest was driven about and floated upon the surface of the water in every direction; notwithstanding which, the female continued to sit as usual, and brought out her young upon her movable habitation. See, now they have all gone away to hide amongst the reeds; they like to come out into the open water late in the evening, and it is not often easy to observe them in the day-time. There are plenty of moor-hens or water-hens in these reedy pools. They are not so peaceful as the coots, for they have been known to attack young ducklings. There one swims, jerking up its tail, which is whitish underneath, and nodding its head; the moor-hen is a smaller bird than the coot, though resembling it both in form and habits. The feet, however, are very different, for, instead of the toes being furnished with a lobed membrane, they have a continuous narrow one down each. Moor-hens have been known to remove their eggs from the nest, in order to add to it, and to replace them again. Mr. Selby relates the following interesting account:

"During the early part of the summer of 1835 a pair of water-hens built their nest by the margin of the ornamental pond at Bell's Hill, a piece of water of considerable extent, and ordinarily fed by a spring from the height above, but into which the contents of another large pond can occasionally be admitted. This was done while the female was sitting; and as the nest had been built when the water-level stood low, the sudden influx of this large body of water from the second pond caused a rise of several inches, so as to threaten the speedy immersion and consequent destruction of the eggs.

This the birds seem to have been aware of, and immediately took precaution against so imminent a danger; for when the gardener, upon whose veracity I can safely rely, seeing the sudden rise of the water, went to look after the nest, expecting to find it covered and the eggs destroyed, or at least forsaken by the hen, he observed, while at a distance, both birds busily engaged about the brink where the nest was placed; and when near enough, he clearly perceived that they were adding, with all possible dispatch, fresh materials to raise the fabric beyond the level of the increased contents of the pond, and that the eggs had by some means been removed from the nest by the birds, and were then deposited upon the gra.s.s, about a foot or more from the margin of the water. He watched them for some time, and saw the nest rapidly increase in height; but I regret to add that he did not remain long enough, fearing he might create alarm, to witness the interesting act of the replacing of the eggs, which must have been effected shortly afterwards; for upon his return in less than an hour, he found the hen quietly sitting upon them in the newly raised nest.

In a few days afterwards the young were hatched, and, as usual, soon quitted the nest and took to the water with the parent. The nest was shown to me _in situ_ very soon afterwards, and I could then plainly discern the formation of the new with the old part of the fabric."

"What is that little bird in the water?" asked Jack. "Oh! he is suddenly gone; do you see the curl in the water where it dived?" It was no doubt a dabchick, then, from your description, though I was not in time to see it before it dived; if we keep quite still and silent I dare say it will appear again. There it is, dabbling in the water in search of water insects that are found amongst the weeds. Another name of this bird is the little grebe; several species of grebes have been found in this county; the great-crested grebe is a very handsome bird and frequents lakes and rivers; but of the five British grebes, the little dabchick is by far the most common. The feet of these birds are peculiar, the toes are not connected together by a web, as you see in ducks and geese; they are, however, united at the base, and each of the three front toes is surrounded by a broad continuous membrane; the lower part of the leg is also very flat; the legs are placed very far backwards, so that these birds stand almost upright; the wings are short and seldom used for flight; however, they are admirable swimmers and divers, and pretty, lively little birds. The plumage of this little grebe varies according to the time of year. Now, in the summer weather, the head, neck and back are a very dark brown; the cheeks and front of the neck a rich chestnut; chin jet black; in the winter they lose this chestnut colour, and are then of a light olive-grey colour and white underneath. Formerly the two different states of the plumage were thought to mark two different species.

The nest, as Mr. Gould tells us, is a raft of weeds and aquatic plants carefully heaped together in a rounded form. The young ones have delicate rose-coloured bills and harlequin-like markings on the body, and rosy-white b.r.e.a.s.t.s. "So active and truly aquatic is the dabchick, even when only one or two days old, that it is almost impossible to see it in a state of nature; for immediately after the young birds are hatched, they either take to the water of their own accord, or cling when not more than an hour old to the backs of their parents, who dive away with them out of harm's way." Mr. Gould mentions that a friend of his, when out on a fishing excursion with him, once shot a dabchick as it dived across a shallow stream; on emerging wounded, on the surface, two young ones clinging to the back were caught by Mr. Gould in his landing net.

So rapid is their diving that they can often avoid the charge of a gun; they then rise again "with only the tips of their bill above water, and even these generally concealed amongst some patch of weeds or gra.s.s." The grebes have a peculiar habit of plucking off the soft feathers from the under side of the body and swallowing them. Why they do so is not known.

[Ill.u.s.tration: CONVOLVULUS.]

"What is this pretty pink flower," asked May, "with long trailing stems and leaves broadly arrow-shaped? From its resemblance to that beautiful convolvulus in the garden I should think it must be a smaller kind of that plant." You are quite right, it is a convolvulus, and its English name of Field Bindweed is expressive of the clinging habits of this plant; see how tightly it has wrapped itself round this tall blade of gra.s.s. Although a very pretty plant; with its pink flowers and darker plaits, its arrow-shaped leaves, and its fragrant smell, it is a troublesome weed to the farmer. Then there is the greater bindweed, with its large bell-blossoms sometimes white as snow, sometimes striped with pink, sometimes almost rose-colour, so often seen growing profusely over the tallest bushes. Both kinds of bindweed, however, are mischievous weeds; the large kind you may find in flower as late as September. Some of the bindweed family, I ought to say, are valuable in medicine. There is for instance the _Convolvulus jalapa_ and _Convolvulus scammonia_, both of which are extensively used in medicine; the former a South American plant and the latter a Syrian one. Then there is the so-called sweet-potato, which is the root of _Convolvulus batatas_ used in China, j.a.pan, and other tropical countries as a wholesome food. Strange it seems that plants so closely related should differ so much in their properties.

The accompanying vignette may be supposed to represent Master w.i.l.l.y watching the movements of a snail.

[Ill.u.s.tration]

WALK VIII.

JULY.

Let us have another stroll on the moors. We pa.s.s over a small brook on our way, and of course stop on the bridge and gaze into the little rivulet. What do I see about four yards off in the shade? A number of small dark-coloured patches which I recognise at once as one of our most beautiful fresh-water algae. We will gather some from the bottom.

There! the little tufts are attached to the upper sides of stones.

When taken out of the water, the plant looks and feels like a ma.s.s of very dark jelly. I will float a piece out in this bottle of water. Did you ever see anything more beautiful? It consists of a number of delicate branches, each arranged in a bead-like row, and from a certain resemblance which these beaded rows bear to frog-sp.a.w.n, as well as from their jelly-like consistency, this alga has received the name of _Batrachospermum_, which means "frogs' sp.a.w.n." If we take a bit home and spread it out carefully on a piece of drying paper, separating the numerous beaded branches one from the other with the point of a needle, and leave it to dry gradually, we shall get a very pretty object indeed. As you may suppose, the plant is a most charming object for the microscope. "Do you think," asked w.i.l.l.y, "it would do in my aquarium?" I have several times tried it in an aquarium; it would live for a few days, then gradually lose colour and break to pieces. The fact is that, as Dr. Ha.s.sall says, these plants "inhabit mostly pure and running waters, being usually met with in fountains, wells, and streams, the force of which is not considerable." The frog-sp.a.w.n alga, therefore, will not thrive in any but the purest water, and a gentle flow is necessary to its growth and health. "These plants are so exceedingly flexible," Dr. Ha.s.sall continues, "that they obey the slightest motion of the fluid which surrounds them, and would seem almost to be endowed with vitality; nothing can surpa.s.s the ease and grace of their movements. When removed from the water they lose all form, and appear like pieces of jelly without trace of organization. On immersion, however, the branches again quickly resume their former disposition. They adhere strongly to paper, and in drying frequently change to some other tint usually much deeper; on being moistened after long intervals they recover much of their original freshness; and it is even a.s.serted that, after having lain in the herbarium for some years, when they are replaced in water in a suitable locality, they will vegetate as before." This last a.s.sertion I must say I do not credit. I shall never forget the delight I felt when I first made the acquaintance of this curious and graceful alga.

From the eyes of how many people are its charms hidden! It is only those that look closely that would notice the little jelly-like tufts growing modestly in shaded places for the most part. This species, however, is common enough in gently flowing and shallow streams, and we may often come across it in our rambles if we take the trouble to use our eyes. There are other extremely beautiful forms of fresh-water algae.

Here in this same stream are the long green threads of _Cladophora glomerata_. I use as few hard words as possible, but I cannot help using them sometimes, as many objects have no English names. This alga is also attached to stones and floats out with the current sometimes two feet in length; and, like the frog-sp.a.w.n alga, is fond of pure water, but I have often kept the _Cladophora_ alive in perfect health in an aquarium for weeks together. Its deep refreshing green colour and graceful form make it a very desirable acquisition for the aquarium. I break off a small bit. Now see its beautifully branched form. Do you remember a round green ball about the size of a small apple which I have at home? Well, that ball, which came from Ellesmere, is nothing else than a ma.s.s of this same _Cladophora_. Dr.

Ha.s.sall is no doubt correct in his explanation of the formation of these b.a.l.l.s. He says, "This state of _Cladophora glomerata_ I believe to be formed as follows: A specimen by the force of some mountain stream swollen by recent rains becomes forced from its attachment; as it is carried along by the current, it is made to revolve repeatedly upon itself, until at last a compact ball is formed of it, which finally becomes deposited in some basin or reservoir in which the stream loses itself, and in which these b.a.l.l.s are usually found." Here are some specimens in the water of a rich brown colour instead of green. This is caused by the growth of other algae over its long branches. See! I shake a bit in my bottle, and you see a quant.i.ty of brown deposit comes off, showing the green threads of the _Cladophora_ underneath. This brown deposit looks to you, I dare say, very uninteresting. I will show you some under the microscope when we get home, and you will see many extremely beautiful forms. These are known by the name of _Diatomaceae_ and _Desmidiae_. I will not tell you more of them at present; but a picture which I will show you will give you the forms of some of these microscopic plants.

[Ill.u.s.tration: FRESH-WATER ALGae, DESMIDEae, AND DIATOMACEae.

All highly magnified.

1.--Staurastrum.

2.--Trigonocystis.

3.--Euastrum.

4.--Closterium.

5.--Diatoma.

6, 7.--Meridion.

8.--Eunotia.

9.--Exilaria.]