The Natural History of Selborne Part 16

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Blackbird, Merula: In March.

Rook, Cornix frugilega: Builds the beginning of March.

Woodlark, Alauda arborea: Hatches in April.

Ring-dove, Palurnbus torquatus: Lays the beginning of April.

All birds that continue in full song till after Midsummer appear to me to breed more than once.

Most kinds of birds seem to me to be wild and shy somewhat in proportion to their bulk; I mean in this island, where they are much pursued and annoyed: but in Ascension-island, and many other desolate places, mariners have found fowls so unacquainted with an human figure, that they would stand still to be taken; as is the case with b.o.o.bies, etc. As an example of what is advanced, I remark that the golden-crested wren (the smallest British bird) will stand unconcerned till you come within three or four yards of it, while the bustard (otis), the largest British land fowl, does not care to admit a person within so many furlongs.

I am, etc.

Letter III To The Honourable Daines Barrington

Selborne, Jan. 15, 1770.

Dear Sir,

It was no small matter of satisfaction to me to find that you were not displeased with my little methodus of birds. If there was any merit in the sketch, it must be owing to its punctually. For many months I carried a list in my pocket of the birds that were to be remarked, and, as I rode or walked about my business, I noted each day the continuance or omission of each bird's song; so that I am as sure of the certainty of my facts as a man can be of any transaction whatsoever.

I shall now proceed to answer the several queries which you put in your two obliging letters, in the best manner that I am able.

Perhaps Eastwick, and its environs, where you heard so very few birds, is not a woodland country, and therefore not stocked with such songsters. If you will cast your eye on my last letter, you will find that many species continued to warble after the beginning of July.

The t.i.tlark and yellowhammer breed late, the latter very late; and therefore it is no wonder that they protract their song; for I lay it down as a maxim in ornithology, that as long as there is any incubation going on there is music. As to the red-breast and wren, it is well known to the most incurious observer that they whistle the year round, hard frost excepted; especially the latter.

It was not in my power to procure you a black-cap, or a less reed- sparrow, or sedge-bird, alive. As the first is undoubtedly, and the last, as far as I can yet see, a summer bird of pa.s.sage, they would require more nice and curious management in a cage than I should be able to give them; they are both distinguished songsters. The note of the former has such a wild sweetness that it always brings to my mind those lines in a song in As You Like It,

And tune his merry note Unto the wild bird's throat.-Shakespeare.

The latter has a surprising variety of notes resembling the song of several other birds; but then it also has an hurrying mariner, not at all to its advantage; it is notwithstanding a delicate polyglot.

It is new to me that t.i.tlarks in cages sing in the night; perhaps only caged birds do so. I once knew a tame red-breast in a cage that always sang as long as candles were in the room; but in their wild state no one supposes they sing in the night.

I should be almost ready to doubt the fact, that there are to be seen much fewer birds in July than in any former month, notwithstanding so many young are hatched daily. Sure I am that it is far otherwise with respect to the swallow tribe, which increases prodigiously as the summer advances: and I saw, at the time mentioned, many hundreds of young wagtails on the banks of the Cherwell, which almost covered the meadows. If the matter appears as you say in the other species, may it not be owing to the dams being engaged in incubation, while the young are concealed by the leaves ?

Many times have I had the curiosity to open the stomachs of woodc.o.c.ks and snipes; but nothing ever occurred that helped to explain to me what their subsistence might be: all that I could ever find was a soft mucus, among which lay many pellucid small gravels.

I am, etc.

Letter IV To The Honourable Daines Barrington

Selborne, Feb. 19, 1770.

Dear Sir,

Your observation that 'the cuckoo does not deposit its egg indiscriminately in the nest of the first bird that comes in its way, but probably looks out a nurse in some degree congenerous, with whom to intrust its young,' is perfectly new to me; and struck me so forcibly, that I naturally fell into a train of thought that led me to consider whether the fact was so, and what reason there was for it.

When I came to recollect and inquire, I could not find that any cuckoo had ever been seen in these parts, except in the nest of the wagtail, the hedge-sparrow, the t.i.tlark, the white-throat, and the red-breast, all soft-billed insectivorous birds. The excellent Mr.

Willughby mentions the nest of the palumbus (ring-dove), and of the fringilla (chaffinch), birds that subsist on acorns and grains, and such hard food: but then he does not mention them as of his own knowledge; but says afterwards that he saw himself a wagtail feeding a cuckoo. It appears hardly possible that a soft-billed bird should subsist on the same food with the hard-billed: for the former have thin membranaceous stomachs suited to their soft food; while the latter, the granivorous tribe, have strong muscular gizzards, which, like mills, grind, by the help of small gravels and pebbles, what is swallowed. This proceeding of the cuckoo, of dropping its eggs as it were by chance, is such a monstrous outrage on maternal affection, one of the first great dictates of nature, and such a violence on instinct, that, had it only been related of a bird in the Brazils, or Peru, it would never have merited our belief. But yet, should it farther appear that this simple bird, when divested of the natural storge(in Greek) that seems to raise the kind in general above themselves, and inspire them with extraordinary degrees of cunning and address, may be still endued with a more enlarged faculty of discerning what species are suitable and congenerous nursing-mothers for its disregarded eggs and young, and may deposit them only under their care, this would be adding wonder to wonder, and instancing in a fresh manner that the methods of Providence are not subjected to any mode or rule, but astonish us in new lights, and in various and changeable appearances.

What was said by a very ancient and sublime writer concerning the defect of natural affection in the ostrich, may be well applied to the bird we are talking of:

'She is hardened against her young ones, as though they were not hers:

Because G.o.d hath deprived her of wisdom, neither hath he imparted to her understanding.' *

(* Job x.x.xix. 16, 17.)

Query.--Does each female cuckoo lay but one egg in a season, or does she drop several in different nests according as opportunity offers?

I am, etc.

Letter V To The Honourable Daines Barrington

Selborne, April 12, 1770.

Dear Sir,

I heard many birds of several species sing last year after Midsummer; enough to prove that the summer solstice is not the period that puts a stop to the music of the woods. The yellowhammer no doubt persists with more steadiness than any other; but the woodlark, the wren, the red-breast, the swallow, the white-throat, the goldfinch, the common linnet, are all undoubted instances of the truth of what I advance.

If this severe season does not interrupt the regularity of the summer migrations, the black-cap will be here in two or three days. I wish it was in my power to procure you one of those songsters; but I am no birdcatcher; and so little used to birds in a cage, that I fear if I had one it would soon die for want of skill in feeding.

Was your reed-sparrow, which you kept in a cage, the thick-billed reed-sparrow of the Zoology, p. 320; or was it the less reed- sparrow of Ray, the sedge-bird of Mr. Pennant's last publication, p.

16?

As to the matter of long-billed birds growing fatter in moderate frosts, I have no doubt within myself what should be the reason.

The thriving at those times appears to me to arise altogether from the gentle check which the cold throws upon insensible perspiration. The case is just the same with blackbirds, etc.; and farmers and warreners observe, the first, that their hogs fat more kindly at such times, and the latter that the rabbits are never in such good case as in a gentle frost. But when frosts are severe, and of long continuance, the case is soon altered; for then a want of food soon overbalances the repletion occasioned by a checked perspiration. I have observed, moreover, that some human const.i.tutions are more inclined to plumpness in winter than in summer.

When birds come to suffer by severe frost, I find that the first that fail and die are the redwing-fieldfares, and then the song-thrushes.

You wonder, with good reason, that the hedge-sparrows, etc., can be induced to sit at all on the egg of the cuckoo without being scandalized at the vast disproportioned size of the supposit.i.tious egg; but the brute creation, I suppose, have very little idea of size, colour, or number. For the common hen, I know, when the fury of incubation is on her, will sit on a single shapeless stone instead of a nest full of eggs that have been withdrawn: and, moreover, a hen- turkey, in the same circ.u.mstances, would sit on in the empty nest till she perished with hunger.

I think the matter might easily be determined whether a cuckoo lays one or two eggs, or more, in a season, by opening a female during the laying-time. If more than one was come down out of the ovary, and advanced to a good size, doubtless then she would that spring lay more than one.

I will endeavour to get a hen, and to examine.

Your supposition that there may be some natural obstruction in singing birds while they are mute, and that when this is removed the song recommences is new and bold; I wish you could discover some good grounds for this suspicion.

I was glad you were pleased with my specimen of the caprimulgus, or fern-owl; you were, I find, acquainted with the bird before.

When we meet, I shall be glad to have some conversation with you concerning the proposal you make of my drawing up an account of the animals in this neighbourhood. Your partiality towards my small abilities persuades you, I fear, that I am able to do more than is in my power: for it is no small undertaking for a man unsupported and alone to begin a natural history from his own autopsia! Though there is endless room for observation in the field of nature, which is boundless, yet investigation (where a man endeavours to be sure of his facts) can make but slow progress; and all that one could collect in many years would go into a very narrow compa.s.s.

Some extracts from your ingenious 'Investigations of the difference between the present temperature of the air in Italy,' etc., have fallen in my way, and gave me great satisfaction: they have removed the objections that always rose in my mind whenever I came to the pa.s.sages which you quote. Surely the judicious Virgil, when writing a didactic poem for the region of Italy, could never think of describing freezing rivers, unless such severity of weather pretty frequently occurred!

The Natural History of Selborne Part 16

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