Kitabı oku: «A Year with the Birds», sayfa 2

One is apt to think of the Creeper as a silent and very busy bird, who never finds leisure to rest and preen his feathers, or to relieve his mind with song. When he does sing he takes us a little aback. One spring morning, as I was strolling in the Broad Walk, a Creeper flew past me and fixed himself on the thick branch of an elm – not on a trunk, as usual – and uttered a loud and vigorous song, something after the manner of the Wren’s. I had to turn the glass upon him to make sure that there was no mistake. This is the only occasion on which I have ever heard the Creeper sing, and it seems strange that a bird with so strong a voice should use it so seldom.

I have never but once seen the Green Woodpecker in Oxford, and that was as he flew rapidly over the Parks in the direction of the Magdalen elms. If he lives there, he must be known to the Magdalen men, but I have not had intelligence of him. The fact is that he is a much wilder bird than his near relation, the Lesser Spotted Woodpecker, who is, or was, beyond doubt an Oxford resident. A correspondent of the Oxford Magazine, “R. W. R.,” states that this bird bred outside his window at Trinity a few years ago, “but has not done so lately for reasons of his own, of which I approve.” Another correspondent, however, reports him from Addison’s Walk; and Mr. Macpherson of Oriel, whose eye is not likely to have erred, believed that he saw one in the Broad Walk a few years ago. I myself have not seen the bird nearer Oxford than Kennington; but I am pretty sure that it is commoner and also less shy than is generally imagined, and also that the ornithologist who sees it is not likely to mistake it for another bird: its very small size – it is not so large as a sparrow – its crimson head, and its wings, with their black and white bars, making it a conspicuous object to a practised eye.⁸

Christchurch Meadow is a favourite home of the Titmice. I believe that I have seen all the five English species here within a space of a very few days: English, not British, for there is one other, the Crested Tit, of which I shall have more to say in another chapter. A family of Longtails, or Bottle-tits, flits from bush to bush, never associating with the others, and so justifying its scientific separation from them. Another family is to be seen in the Parks, where they build a nest every year. These delightful little birds are however quite willing to live in the very centre of a town, indifferent to noise and dust. A Marsh-tit was once seen performing its antics on a lamp-post in St. Giles. A Great-tit built its nest in the stump of an old laburnum, in the little garden of Lincoln College, within a few yards of the Turl and High Street; the nest was discovered by my dog, who was prowling about the garden with a view to cats. I took great interest in this brood, which was successfully reared, and on one occasion I watched the parents bringing food to their young for twenty minutes, during which time they were fed fourteen times. The ringing note of this Great-tit or his relations is the first to be heard in that garden in winter-time, and is always welcome. The little Blue-tit is also forthcoming there at times. One Sunday morning I saw a Blue-tit climbing the walls of my College quadrangle, almost after the manner of a Creeper, searching the crannies for insects, and even breaking down the crust of weathered stone. Among memories of the rain, mist, and hard work of many an Oxford winter spent among these gray walls, “haec olim meminisse juvabit.”

But I have strayed away from Christchurch Meadow and the Botanic Garden. Here it is more especially that the Thrush tribe makes its presence felt throughout the autumn. In the Gardens the thrushes and blackbirds have become so tame from constant quiet and protection, that, like the donkeys at Athens of which Plato tells us, they will hardly deign to move out of your way. A blackbird proceeded calmly to take his bath, in the fountain at the lower end near the meadow, one morning when I was looking on, and seemed to be fully aware of the fact that there was a locked gate between us. Missel-thrushes are also to be seen here; and all these birds go out of a morning to breakfast on a thickly-berried thorn-bush at the Cherwell end of the Broad Walk, where they meet with their relations the Redwings, and now and then with a Fieldfare. The walker round the meadow in winter will seldom fail to hear the harsh call of the redwing, as, together with starlings innumerable, and abundance of blackbirds, they utter loud sounds of disapproval. There is one bush here whose berries must have some strange ambrosial flavour that blackbirds dearly love. All the blackbirds in Oxford seem to have their free breakfast-table here, and they have grown so bold that they will return to it again and again as I teasingly walk up and down in front of it, merely flying to a neighbouring tree when I scrutinize them too closely in search of a lingering Ring-ousel. Who ever heard of a flock of blackbirds? Here, however, in November, 1884, was a sight to be seen, which might possibly throw some light on the process of developing gregarious habits.⁹

Rooks, Starlings, Jackdaws, and Sparrows, which abound here and everywhere else in Oxford, every one can observe for themselves, and of Sparrows I shall have something to say in the next chapter; but let me remind my young readers that every bird is worth noticing, whether it be the rarest or the commonest. My sister laughs at me, because the other day she found an old copy of White’s Selborne belonging to me, wherein was inscribed on the page devoted to the Rook, in puerile handwriting, the following annotation: “Common about Bath” (where I was then at school). But I tell her that it was a strictly accurate scientific observation; and I only wish that I had followed it up with others equally unimpeachable.

But more out-of-the-way birds will sometimes come to Oxford, and I have seen a Kestrel trying to hover in a high wind over Christchurch Meadow, and a Heron sitting on the old gatepost in the middle of the field. Herons are often to be seen by the river-bank in Port Meadow; and it was here, some years ago, that Mr. W. T. Arnold, of University College, was witness of an extraordinary attack made by a party of three on some small birds. Port Meadow constantly entices sea-birds when it is under water, or when the water is receding and leaving that horrible slime which is so unpleasant to the nose of man; and in fact there is hardly a wader or a scratcher (to use Mr. Ruskin’s term)¹⁰ that has not at one time or another been taken near Oxford. Sometimes they come on migration, sometimes they are driven by stress of weather. Two Stormy Petrels were caught at Bossom’s barge in the Port Meadow not long ago, and exhibited in Mr. Darbey the birdstuffer’s window. And a well-known Oxford physician has kindly given me an interesting account of his discovery of a Great Northern Diver, swimming disconsolately in a large hole in the ice near King’s Weir, one day during the famous Crimean winter of 1854-5; this splendid bird he shot with a gun borrowed from the inn at Godstow. During the spring and early summer of 1866, our visitors from the sea-coast were constant and numerous. Even the beautiful and graceful little Tern (Sterna Minuta) more than once found his way here; and on the second occasion saved his own life by the confidence which he seemed to repose in man. ‘I intended to shoot it,’ wrote a young friend of mine, ‘but relented when I saw how tame and trustful it was.’

Specimens of almost all such birds are to be seen in the bird-cases of the Museum, and occasionally they may be seen in the flesh in the Market. Both Market and Museum will give plenty to do on a rainy day in winter: —

 
Ubi jam breviorque dies et mollior aestas
Quae vigilanda viris!
 

CHAPTER II.
OXFORD: SPRING AND EARLY SUMMER

All the birds mentioned in the last chapter are residents in Oxford, in greater or less numbers according to the season, except the Fieldfares and Redwings, the Grey Wagtail, and the rarer visitors: and of these the Fieldfares and Redwings are the only true winter birds. They come from the north and east in September and October, and depart again in March and April. When we begin our Summer Term not one is to be seen. The berries in the meadow are all eaten up long before Lent Term is over, and though these are not entirely or even chiefly the Redwing’s food, the birds have generally disappeared with them.

They do not however leave the country districts till later. When wild birds like these come into a town, the cause is almost certain to be stress of weather; when the winter’s back is broken, they return to the fields and hedges till the approach of summer calls them northwards. There they assemble together in immense flocks, showing all the restlessness and excitement of the smaller birds that leave us in the autumn; suddenly the whole mass rises and departs like a cloud. Accounts are always forthcoming of the departure of summer migrants, and especially of the Swallows and Martins, and there are few who have not seen these as they collect on the sunny side of the house-roof, or bead the parapet of the Radcliffe building, before they make up their minds to the journey. But few have seen the Fieldfares and Redwings under the same conditions, and I find no account of their migration, or at least of what actually happens when they go, in any book within my reach as I write. But on March 19, 1884, I was lucky enough to see something of their farewell ceremonies. I was walking in some water-meadows adjoining a wood, on the outskirts of which were a number of tall elms and poplars, when I heard an extraordinary noise, loud, harsh, and continuous, and of great volume, proceeding from the direction of these trees, which were at the time nearly half-a-mile distant. I had been hearing the noise for a minute or two without attending to it, and was gradually developing a consciousness that some strange new agricultural instrument, or several of them, were at work somewhere near, when some Fieldfares flew past me to alight on the meadow not far off. Then putting up my glass, I saw that the trees were literally black with birds; and as long as I stayed, they continued there, only retreating a little as I approached, and sending foraging detachments into the meadow, or changing trees in continual fits of restlessness. The noise they made was like the deep organ-sounds of sea-birds in the breeding-time, but harsher and less serious. I would willingly have stayed to see them depart, but not knowing when that might be, I was obliged to go home: and the next day when I went to look for them, only a few were left.

These birds do not leave us as a rule before the first summer visitors have arrived. In the case I have just mentioned, the spring was a warm one, and the very next day I saw the ever-welcome Chiff-chaff, which is the earliest to come and the latest to go, of all the delicate warblers which come to find a summer’s shelter in our abundant trees and herbage.

I use this word ‘warbler’ in a sense which calls for a word of explanation: for not only are the birds which are called in the natural history books by this name often very difficult to distinguish, but the word itself has been constantly used to denote a certain class of birds, without any precise explanation of the species meant to be included in it. Nor is it in itself a very exact word; some of the birds which are habitually called warblers do not warble in the proper sense of the word,¹¹ and many others who really warble, such as the common Hedge-sparrow, have no near relationship to the class I am speaking of. But as it is a term in use, and a word that pleases, I will retain it in this chapter, with an explanation which may at the same time help some beginner in dealing with a difficult group of birds.

If the reader of this book who really cares to understand the differences of the bird-life which abounds around us, will buy for a shilling Mr. Dresser’s most useful List of European Birds,¹² he will find, under the great family of the Turdidae, three sub-families following each other on pages 7, 8, and 9, respectively called Sylvianae, or birds of woodland habits, Phylloscopinae, or leaf-searching birds, and Acrocephalinae, or birds belonging to a group many of the members of which have the front of the head narrow and depressed: and under all these three sub-families he will find several species bearing in popular English the name of warbler. At the same time he will find other birds in these sub-families, which are quite familiar to him, but not as ‘warblers’ in any technical sense of the word; thus the Robin will be found in the first sub-family, and the Golden-crested Wren in the second. But, leaving out these two species, and also the Nightingale, which is a bird of somewhat peculiar structure and habits, he will find four birds in the first sub-family belonging to the genus Sylvia, which are all loosely called warblers, and will be mentioned in this chapter as summer visitors to Oxford, viz. the Whitethroat (or Whitethroat-warbler), the Lesser Whitethroat, the Blackcap, and the Garden-warbler; he will also find two in the second, belonging to the genus Phylloscopus, the Chiff-chaff and the Willow-wren (or Willow-warbler), and two in the third, belonging to the genus Acrocephalus, the Sedge-warbler and the Reed-warbler. Let it be observed that each of these three genera, Sylvia, Phylloscopus, and Acrocephalus, is the representative genus of the sub-family in this classification, and has given it its name; so that we might expect to find some decided differences of appearance or habit between the members of these genera respectively. And this is precisely what is the case, as any one may prove for himself by a day or two’s careful observation.

The birds I have mentioned as belonging to the first genus, i. e. Whitethroat, etc., are all of a fairly substantial build, fond of perching, singing a varied and warbling song (with the exception of the Lesser Whitethroat, of whose song I shall speak presently), and all preferring to build their cup-shaped nest a little way from the ground, in a thick bush, hedge, or patch of thick-growing plants, such as nettles. They also have the peculiarity of loving small fruits and berries as food, and are all apt to come into our gardens in search of them, where they do quite as much good as harm by a large consumption of insects and caterpillars.

Secondly, the two kinds of birds belonging to the genus Phylloscopus, Chiff-chaff and Willow-warbler, are alike in having slender, delicate frames, with a slight bend forward as of creatures given to climbing up and down, in an almost entire absence of the steady perching habit, in building nests upon the ground with a hole at the side, and partly arched over by a roof of dried grass, in feeding almost exclusively on insects, and in singing a song which is always the same, each new effort being undistinguishable from the last. In fact these two birds are so much alike in every respect but their voices (which though unvarying are very different from each other), that it is almost impossible for a novice to distinguish them unless he hears them.

Thirdly, the two species belonging to the genus Acrocephalus, the Sedge- and Reed-warblers, differ from the other two groups in frequenting the banks of rivers and streams much more exclusively, where they climb up and down the water-plants, as their name suggests, and build a cup-shaped nest; and also in the nervous intensity and continuity of their song.

These eight species, then, are the ‘warblers,’ of whom I am going to speak in the first place. They may easily be remembered in these three groups by any one who will take the trouble to learn their voices, and to look out for them when they first arrive, before the leaves have come out and the birds are shy of approach on account of their nests and young. But without some little pains confusion is sure to arise, as we may well understand when we consider that a century ago even such a naturalist as White of Selborne had great difficulty in distinguishing them; he was in fact the first to discover the Chiff-chaff (one of our commonest and most obvious summer migrants) as a species separate from the others of our second group. To give an idea of the progress Ornithology has made during the last century, I will quote Markwick’s note on White’s communication: – ‘This bird, which Mr. White calls the smallest Willow-wren, or Chiff-chaff, makes its appearance very early in the spring, and is very common with us, but I cannot make out the three different species of Willow-wrens, which he says he has discovered.’¹³ Nothing but a personal acquaintance – a friendship, as I must call it in my own case – with these little birds, as they live their every-day life among us, will suffice to fix the individuality of each species in the mind; not even the best plates in a book, or the faded and lifeless figures in a museum. You may shoot and dissect them, and study them as you would study and label a set of fossils: but a bird is a living thing, and you will never really know him till you fully understand how he lives.

Let us imagine ourselves taking a stroll into the Parks with the object of seeing these eight birds, not as skeletons, but as living realities. The first to present themselves to eye and ear will be the two species of the second group, which may roughly be described (so far at least as England is concerned) as containing Tree-warblers. From the tall trees in St. John’s Gardens, before we reach the Museum, we are certain on any tolerably warm day to hear the Willow-warbler, which has been the last few years extremely abundant; in Oxford alone there must have been two or three hundred pairs in the spring of 1885. From the same trees is also pretty sure to come ringing the two notes of the Chiff-chaff, which is a less abundant bird, but one that makes its presence more obvious. Let us pause here a moment to make our ideas clear about these two. We may justly take them first, as they are the earliest of their group to arrive in England.

When the first balmy breath of spring brings the celandines into bloom on the hedge-bank, and when the sweet violets and primroses are beginning to feel the warmth of the sun, you may always look out for the Chiff-chaff on the sheltered side of a wood or coppice. As a rule, I see them before I hear them; if they come with an east wind, they doubtless feel chilly for a day or two, or miss the plentiful supply of food which is absolutely necessary to a bird in full song. Thus in 1884, I noted March 20 as the first day on which I saw the Chiff-chaff, and March 23 as the first on which I heard him. The next year, the month of March being less genial, I looked and listened in vain till the 31st. On that day I made a circuit round a wood to its sunny side, sheltered well from east and north, and entering for a little way one of these grassy ‘rides’ which are the delight of all wood-haunting birds, I stood quite still and listened. First a Robin, then a Chaffinch broke the silence; a Wood-pigeon broke away through the boughs; but no Chiff-chaff. After a while I was just turning away, when a very faint sound caught my ear, which I knew I had not heard for many months. I listened still more keenly, and caught it again; it was the prelude, the preliminary whisper, with which I have noticed that this bird, in common with a few others, is wont to work up his faculties to the effort of an outburst of song. In another minute that song was resounding through the wood.

No one who hails the approach of spring as the real beginning of a new life for men and plants and animals, can fail to be grateful to this little brown bird for putting on it the stamp and sanction of his clear resonant voice. We may grow tired of his two notes – he never gets beyond two – for he sings almost the whole summer through, and was in full voice on the 25th of September in the same year in which he began on March 23rd; but not even the first twitter of the Swallow, or the earliest song of the Nightingale, has the same hopeful story to tell me as this delicate traveller who dares the east wind and the frost. They spend the greater part of the year with us; I have seen them still lurking in sheltered corners of the Dorsetshire coast, at the beginning of October, within sound of the sea-waves in which many of them must doubtless perish before they reach their journey’s end. And now and then they will even pass the winter with us: this was the case with one which took up his sojourn at Bodicote, near Banbury, in a winter of general mildness, though not unbroken, if I recollect right, by some very sharp frosts.

The Willow-warbler follows his cousin to England in a very few days, and remains his companion in the trees all through the summer. He has the same brownish-yellow back and yellowish-white breast, but is a very little larger, and sings a very different song, which is unique among all British birds. Beginning with a high and tolerably full note, he drops it both in force and pitch in a cadence short and sweet, as though he were getting exhausted with the effort; for that it is a real effort to him and all his slim and tender relations, no one who watches as well as listens can have a reasonable doubt. This cadence is often perfect, by which I mean that it descends gradually, not of course on the notes of our musical scale, by which no birds in their natural state would deign to be fettered, but through fractions of one or perhaps two of our tones, and without returning upwards at the end; but still more often, and especially, as I fancy, after they have been here a few weeks, they take to finishing with a note nearly as high in pitch as that with which they began.¹⁴ This singular song is heard in summer term in every part of the Parks, and in the grass beneath the trees there must be many nests; but these we are not likely to find except by accident, so beautifully are they concealed by their grassy roofs. Through the hole in the upper part of the side you see tiny eggs, speckled with reddish brown, lying on a warm bedding of soft feathers; one of these was built last May in the very middle of the lawn of the Parsonage-house at Ferry-Hincksey, and two others of exactly the same build, one a Chiff-chaff’s, were but a little way outside the garden-gate, and had escaped the sharp eyes of the village boys when I last heard of them. Though from being on the ground they probably escape the notice of Magpies and Jackdaws and other egg-devouring birds, these eggs and the young that follow must often fall a prey to stoats and weasels, rats and hedgehogs. That such creatures are not entirely absent from the neighbourhood of the Parks, I can myself bear witness, having seen one morning two fine stoats in deadly combat for some object of prey which I could not discern, as I was divided from them by the river. The piping squeaks they uttered were so vehement and loud, that at the first moment I mistook them for the alarm-note of some bird that was strange to me. In July, 1886, I saw a large stoat playing in Addison’s Walk, when few human beings were about, and the young birds, newly-fledged, were no doubt an easy prey.

One word more before we leave the Tree-warblers. In front of my drawing-room window in the country are always two rows of hedges of sweet peas, and another of edible peas; towards the end of the summer some little pale yellow birds come frequently and climb up and down the pea-sticks, apparently in search of insects rather than of the peas. These are the young Willow-warblers, which after their first moult assume this gently-toned yellow tint; and very graceful and beautiful creatures they are. I have sometimes seen them hover, like humming-birds, over a spray on which they could not get an easy footing, and give the stem or leaves a series of rapid pecks.

We have to walk but a little further on to hear or see at least two of our first group, the Sylviae, or fruit-eating warblers. As we pass into the Park by the entrance close to the house of the Keeper of the Museum, we are almost sure, on any sunny day, to hear both Blackcap and Garden-warbler, and with a little pains and patience, to see them both. These two (for a wonder) take their scientific names from the characteristics by which sensible English folk have thought best to name them; the Blackcap being Sylvia atracapilla, and the Garden-warbler Sylvia hortensis. Mr. Ruskin says, in that delicious fragment of his about birds, called Love’s Meinie, that all birds should be named on this principle; and indeed if they had only to discharge the duty which many of our English names perform so well, viz. that of letting English people know of what bird we are talking, his plan would be an excellent one. Unluckily, Ornithology is a science, and a science which embraces all the birds in the world; and we must have some means of knowing for certain that we shall be understood of all the world when we mention a bird’s name. This necessity is well illustrated in the case of the warblers. So many kinds of them are there, belonging to all our three groups, in Europe alone, not to speak of other parts of the world, that even a scientific terminology and description upon description have not been able to save the birds from getting mixed up together, or getting confounded with their own young, or with the young of other birds.

If the Blackcap were not a Sylvia, he could not well be scientifically named after his black head, for other birds, such as Titmice, have also black heads, and I have frequently heard the Cole Tit described as the Blackcap. In any case he should perhaps have been named after his wonderful faculty of song, in which he far excels all the other birds of our three groups. Most people know the Blackcap’s song who have ever lived in the country, for you can hardly enter a wood in the summer without being struck by it; and all I need do here is to distinguish it as well as I can from that of the Garden-warbler, which may easily be mistaken for it by an unpractised ear, when the birds are keeping out of sight in the foliage, as they often most provokingly will do. Both are essentially warblers; that is, they sing a strain of music, continuous and legato, instead of a song that is broken up into separate notes or short phrases, like that of the Song-thrush, or the Chiff-chaff. But they differ in two points: the strain of the Blackcap is shorter, forming in fact one lengthened phrase “in sweetness long drawn out,” while the Garden-warbler will go on almost continuously for many minutes together; and secondly, the Blackcap’s music is played upon a mellower instrument. The most gifted Blackcaps – for birds of the same species differ considerably in their power of song – excel all other birds in the soft quality of their tone, just as a really good boy’s voice, though less brilliant and resonant, excels all women’s voices in softness and sweetness. So far as I have been able to observe, the Blackcap’s voice is almost entirely wanting in that power of producing the harmonics of a note which gives a musical sound its brilliant quality; but this very want is what produces its unrivalled mellowness.

The other two members of our first group (we are still in genus Sylvia) are the two Whitethroats, greater and lesser, and we have not far to go to find them. They arrive just at the beginning of our Easter Term, but never come to Oxford in great numbers, because their proper homes, the hedge-rows, are naturally not common objects of a town. In the country the greater Whitethroats are swarming this year (1885), and in most years they are the most abundant of our eight warblers; and the smaller bird, less seen and less showy, makes his presence felt in almost every lane and meadow by the brilliancy of his note.

Where shall we find a hedge near at hand, where we may learn to distinguish the two birds? We left the Blackcaps and Garden-warblers at the upper end of the Park; we shall still have a chance of listening to them if we take the walk towards Parsons’ Pleasure, and here in the thorn-hedge on the right hand of the path, we shall find both the Whitethroats.¹⁵ As we walk along, a rough grating sound, something like the noise of a diminutive corn-crake, is heard on the other side of the hedge – stopping when we stop, and sounding ahead of us as we walk on. This is the teasing way of the greater Whitethroat, and it means that he is either building a nest in the hedge, or thinking of doing so. If you give him time, however, he will show himself, flirting up to the top of the hedge, crooning, craking, and popping into it again; then flying out a little way, cheerily singing a soft and truly warbling song, with fluttering wings and roughened feathers, and then perhaps perching on a twig to repeat it. Now you see the white of his throat; it is real white, and it does not go below the throat. In one book I have seen the Garden-warbler called a Whitethroat; but in his case the white is not so pure, and it is continued down the breast. The throat of both Whitethroats is real white, and they have a pleasant way of puffing it out, as if to assure one that there is no mistake about it.

But how to distinguish the two? for in size they differ hardly enough to guide an inexperienced eye. There are three points of marked difference. The larger bird has a rufous or rusty-coloured back,¹⁶ and his wing-coverts are of much the same colour; while the back of the lesser bird is darkish or grayish brown. Secondly, the head of the lesser Whitethroat is of a much darker bluish-gray tint. But much the best point of distinction in the breeding season is in the song. As I have said, the larger bird warbles; but the lesser one, after a little preliminary soliloquy in an under-tone, bursts out into a succession of high notes, all of exactly the same pitch. It took me some time to find out who was the performer of this music which I heard so constantly in the hedges, for the bird is very restless and very modest. When I caught sight of him he would not stop to be examined closely. One day however he was kind enough to alight for a moment in a poplar close by me, and as I watched him in the loosely-leaved branches, he poured out the song, and duly got the credit for it.