Part 8

Their resorts are in hollow trees and under the eaves of buildings, where numbers may associate together, especially in hibernation. Their presence is often indicated by thick layers of excrement.

The Great Bat flies all through the year with the exception of January and the latter part of December. Pied and almost black variations from the normal colouring have been recorded.

The sexes are said to separate into distinct colonies in the summer: the females retiring to trees. The single young is born naked and blind towards the end of June. When they get their fur they are much darker than the adults.

Although the Great Bat is generally distributed as far north as Yorkshire, Durham, and the Lake District, it is common only in the South of England, from Norfolk to Cornwall, but is rare in the Isle of Wight. It is not recorded from Ireland. Formerly, it was not considered a native of Scotland, but in recent years several examples have been captured there. It is found throughout the greater part of Europe and adjacent parts of Asia.

*Leisler's Bat* (Nyctalus leisleri, Kuhl).

It is not necessary to give a detailed description of Leisler's or the Hairy-winged Bat, for it is a miniature edition of the Great Bat in a darker binding. The length of the head and body is two and a half inches and of the tail an inch and a half. The wing expanse is thirteen inches and a quarter. The fur on the upper parts is a darker brown than that of the Great Bat, but it is lighter on the under parts. The skull is only half the size of that species, and the entire build is lighter and less massive. Owing to this difference in size it is not so likely to be mistaken on the wing for the Great Bat as for the Common Bat. It is without the strong odour of the Great Bat. It agrees with the latter in its high flight, but its movements are not so swift and are more zigzag.

It is one of the rarest of our Bats, and like the Great Bat a woodland species, making its dormitory preferably high up in a decayed oak, but also in the roofs and crevices of buildings. Its period of activity begins about the third week in April and lasts until near the end of September, when it goes into hibernation, but a little mild weather in winter will wake it up and bring it out for a flight. According to the observations of Mr. C. B. Moffat it flies for about a hundred minutes just after sunset, and for a similar period just before sunrise. Its food consists of flies, beetles, and moths. Dr. Alcock, who has brought this Bat down by shooting it an hour after sunset, found it so crammed with food that it did not appear physically possible for it to feed longer.

The distribution of Leisler's Bat does not agree at all with that of its near ally, the Great Bat. It has been obtained chiefly in the Valley of the Avon (Warwickshire); also in Yorkshire, Cheshire, and Norfolk. It does not appear to occur in Scotland; but it is reported as abundant in several parts of Ireland. It is a purely European species, occurring only from Central Europe westward.

*Long-eared Bat* (Plecotus auritus, Linn.)

The Long-eared is probably the best known of our Bats owing to the very distinctive character afforded by the huge ears, which are as long as the forearm and longer than the body. In addition, it is one of the commonest and most widely distributed of our Bats, and likely to be met with anywhere in the British Islands. It is, however, rarer in the North of Scotland than elsewhere. It is found nearly all over Europe.

The large and mobile ears give this Bat an appearance of size not justified by its small and delicate build. The head and body combined measure less than two inches, whilst the tail is only a fraction less than that measurement. The fact that no other European Bat has such an equipment renders a detailed description superfluous, for the ears at once distinguish this from all the other species. These ears have their bases joined across the forehead. Their form is a long oval with rounded tip. Except for fringes on the folds they are hairless. They are semi-transparent and have transverse folds. The tapering tragus is nearly half as long as the ear, and might be mistaken for it when the Bat hangs asleep; for then the ears are carefully folded and tucked away in the wing whilst the tragus sticks out beyond the inanimate-looking bundle. Sometimes, when awake, one ear is held at a different angle from the other; but in flight both ears are directed forward. Often, when it has caught an insect, the Long-eared Bat will come to the ground to eat it.

The soft, silky, brown fur is long and thick, especially on the shoulders, but does not extend far upon the wings. On the under parts it pales to yellowish or dirty white. The wings are both long and broad, and their expanse in flight is about ten inches. The long tail when folded forwards can touch the top of the head; its tip is slightly free from the interfemoral membrane, and when the Bat hooks itself up head downwards for sleep it serves as a third foot.

The Long-eared Bat is found chiefly among trees, though it frequently comes into open windows at night when its hunting is over. It flies among the branches of trees and examines the foliage for insects of all kinds. In early spring, when the sallows are in bloom and attracting swarms of insects, the Long-eared Bat is there also: fresh from hibernation and with a keen appetite. He hovers like a hawk over a favourable tree, and swoops down upon his selected prey. He appears in the evening usually about half an hour after the sun has departed, and apparently feeds during the greater part of the night; occasionally he is active in daylight. He appears to be at least partially migratory, for it has been observed that in summer a swarm will appear in a district where they are not noticeable as a rule, and after staying a few weeks disappear.

The single young one is born in June or July.

They are often found hibernating in clusters under house-roofs; but solitary individuals are also found in hollow trees and similar situations. Should the thermometer register 46° F. or more at any time during the winter, the Long-eared Bat awakes and makes a foraging flight--calling attention to his presence by his acute, shrill cry.

The dental formula is: i 2/3, c 1/1, p 2/3, m 3/3 = 36.

*Barbastelle* (Barbastella barbastellus, Schreber).

One feels inclined to apologise for the poverty of language displayed in the heading above; though no one accepts responsibility for it--the fault lies with the Law of Priority. A strong point in the Linnean System of nomenclature was its binomial character--there were two words only in the name of every animal and plant, the first of the two indicating the genus in which it was grouped, and the second peculiar to the species. In recent years the extension of our knowledge of the world's fauna has led to the breaking up of many of the older genera and a regrouping of the species. In some cases the species name has been adopted to denote a new genus, and then the Law of Priority steps in and says the oldest species name must be retained, so that instead of a binomial we get a mere duplication. When this happens--as above--to be essentially the same as the only "popular" name the species has ever had the result is ludicrous.

Daubenton, who first described it (1759), called it the Bearded Bat (La Barbastelle) owing to tufts of black bristles on the glandular swellings on the muzzle. It is of slender form with long legs and small feet. The irregularly four-sided ears are relatively large, as broad as long, and united by their bases just behind the muzzle. The outer border has a deep notch; the lance-shaped tragus is half the length of the ear. The nostrils open in a naked depression.

The long, soft fur is a very dark brown, but many of the hairs on the upper surface have pale tips which produce a frosted appearance; on the lower surface such light tips are more numerous, and are specially evident along the middle line of the abdomen. The wing, ear, nose, and foot are dusky, appearing lighter than the furred regions.

The head and body measure about two inches, and the tail an inch and three-quarters. The expanse of wings is about ten and a third inches. This and the Long-eared Bat are the only British species whose ears connect; and the form of the ear in each is so distinct that there is no danger of confusing them. It is both solitary and silent in flight, which begins early in the evening, often in daylight; it holds its feet far apart and the tail decurved. In fine weather it flies high. During its diurnal rest it has been found in various retreats, often in company: under thatch of a shed, between the rafters and tiles of outhouses, behind a cottage shutter, in the crevices of walls and trees. Its voice is a metallic squeak or a buzz.

It has one premolar less on each side than the Long-eared Bat, so that its dental formula stands thus: i 2/3, c 1/1, p 2/2, m 3/3 = 34.

As a British Bat, the Barbastelle is found chiefly in the South of England, though it has been recorded from all the English counties between the Severn and the Wash; also Lincoln, Cheshire, and Cumberland (Carlisle). It appears to be absent from Scotland, Ireland, and the Isle of Man.

FLESH-EATERS: FOX, BADGER, OTTER, WEASELS, MARTENS, AND WILD CAT

*Fox* (Vulpes canis, Linn.).

It is safe to say that, except in the wildest and most remote corners of our island, the Fox would have been placed long ago in the list of extinct British mammals, but for its careful preservation by the various "hunts." In recent times--that is since fox-hunting became a fashionable sport--the poultry and sheep-raising agriculturist has had to bear heavy losses in order that the local pack of fox-hounds may have its well-conditioned quarry at the proper season. As far back as the reign of Elizabeth an Act of Parliament was passed for the protection of grain, which incidentally provided for the payment of "xijd" for the head of every Fox or Gray that might be brought in to the officers appointed to receive them. To-day, outside the hunt areas, the killing of a Fox is considered a meritorious act, particularly in the northern mountain districts; in Cornwall, we have seen a loafer carrying a dead Fox around the villages and receiving pence from the grateful owners of domestic poultry.

The head and body of the Fox measures usually a trifle over two feet in length, and the bushy, white-tipped tail adds at least another foot to his total length when running; but examples have been recorded greatly exceeding these measurements. He stands only about fourteen inches high at the shoulder. The beautiful fur is russet or red-brown above and white on the under parts. The front of the limbs and the back of the ears are black. The sharp-pointed long muzzle, the erect ears, and the quick movements of the eye with its elliptical pupil combine to give him an alert, cunning appearance, which so impressed the ancient writers that they invented many stories of his astuteness. The Foxes ("Tods") of Scotland, although of the same species, have usually greyer fur than that of the English Fox. The Fox is an ancient Briton, and he was here at a period long anterior to the Mammoth's days.

The habits of the Fox are nocturnal, and save at the breeding season he leads a solitary life. The day is spent in an "earth"--a burrow underground, rarely made by himself, usually acquired from Badger or Rabbit; in the former case he has probably taken up quarters in the entrance to a Badger's earth and rendered it uninhabitable to the more cleanly beast by permeating it with the secretion from glands under the tail. In the case of the Rabbit-burrow the Fox gets undisputed possession by eating out those who constructed it. The Fox then stops all the exits except one, leaving that if possible that opens in a bramble thicket or the dense undergrowth of bracken on a hillside. From this stronghold he issues at dusk, and trots at a light easy pace along his accustomed trails, keeping a watchful eye for rabbit, hare, pheasant, partridge, hedgehog, squirrel, vole, frog--even snails and beetles. He sometimes takes to the seashore in quest of fish, crabs, and mussels. On winter nights he will prowl around the farms, looking for a hen-house whose door has not been properly secured; or for a fowl that is sleeping out in the copse. Sometimes a lamb is the victim, and in the mountain districts hunger will goad him to attack one of the small mountain sheep, especially if the vixen is hunting with him. If cornered he proves a hard fighter, and snaps like a wolf.