T gave me no small satisfaction to hear that the falco turned out an uncommon one. I must confess I should have been better pleased to have heard that I had sent you a bird that you had never seen before; but that, I find, would be a difficult task.

I have procured some of the mice mentioned in my former letters, a young one and a female with young, both of which I have preserved in brandy. From the colour, shape, size, and manner of nesting, I make no doubt but that the species is nondescript. They are much smaller, and more slender, than the mus domesticus medius of Ray; and have more of the squirrel or dormouse colour: their belly is white; a straight line along their sides divides the shades of their back and belly. They never enter into houses; are carried into ricks and barns with the sheaves; abound in harvest; and build their nests amidst the straws of the corn above the ground, and sometimes in.

This hawk, as already stated, proved to be the falco pe regrinus.-ED.

thistles. They breed as many as eight at a litter, in a little round nest, composed of the blades of grass or wheat.

One of these nests I procured this autumn, most artificially platted, and composed of the blades of wheat; perfectly round, and about the size of a cricket-ball; with the aperture so ingeniously closed, that there was no discovering to what part it belonged. It was so compact and well filled, that it would roll across the table without being discomposed, though it contained eight little mice that were naked and blind. As this nest was perfectly full, how could the dam come at her litter respectively, so as to administer a teat to each? Perhaps she opens different places for that purpose, adjusting them

*The harvest Mouse (Mus messorius, Shaw) has been described in various parts of England and Scotland, as well as in Hampshire, where White first discovered it. It is herbivorous, and feeds chiefly on corn; but it does not seem to despise insect food, for Bingley describes an instance where one sprang with great agility along the wires of a cage at a large blue fly buzzing against it. It is the prettiest, as well as the smallest, of British quadrupeds, but is not so easily tamed as the field mouse. Mr. White has minutely described the nest of this little creature; but Dr. Gloger furnished Mr. Bennett with a still more precise account of it. He describes it as beautifully constructed of panicles and leaves of three stems of the common reed, interwoven together, and forming a roundish ball, suspended on the living plants, at a height of five inches from the ground. On the side opposite the stems, rather below the middle, was a small aperture, which appeared to be closed during the absence of the parent, and was scarcely observable when one of the young ones had escaped through it. The inside felt soft and warm, smooth, and nearly rounded, but very confined. It contained five young, but one previously examined by Dr. Gloger sheltered no less than nine. It is supposed to be identical with the mus minutus of Pallas, and probably the mulot nain of F. Cuvier. Its head and body, two inches six lines; its tail, two inches five lines.-ED.

again when the business is over: but she could not possibly be contained herself in the ball with her young, which, moreover, would be daily increasing in bulk. This wonderful procreant cradle, an elegant instance of the efforts of instinct, was found in a wheat-field, suspended in the head of a thistle.

A gentleman, curious in birds, wrote me word that his servant had shot one last January, in that severe weather, which he believed would puzzle me. I called to see it this summer, not knowing what to expect: but the moment I took it in hand, I pronounced it the male garrulus bohemicus,* or German silk-tail, from the five peculiar crimson tags or points which it carries at the ends of five of the short remiges. It cannot, I suppose, with any propriety, be called an English bird: and yet I see, by Ray's Philosoph. Letters," that great flocks of them appeared in this kingdom in the winter of 1685, feeding on haws.

66

The mention of haws puts me in mind that there is a total failure of that wild fruit, so conducive to the support of many of the winged nation. For the same severe weather, late in the spring, which cut off all the produce of the more tender and curious trees, destroyed also that of the more hardy and

common.

Some birds, haunting with the missel-thrushes, and feeding on the berries of the yew-tree, which

• The Waxwing has been killed in many of the English counties, but its breeding-place is not very well ascertained, although Fresch says it breeds in Tartary, among the rocks. The Prince de Canino conjectures that its breeding-place may be the elevated table-land of Central Asia. Sir John Richardson found them in hundreds settling on a grove of poplars on the banks of the Saskatchewan in America.-ED.

answered to the description of the merula torquata, or ring-ouzel, were lately seen'in this neighbourhood. I employed some people to procure me a specimen, but without success.

Query.-Might not Canary birds be naturalized to this climate, provided their eggs were put, in the spring, into the nests of some of their congeners, as goldfinches, greenfinches, &c.? Before winter perhaps they might be hardened, and able to shift for themselves.

About ten years ago I used to spend some weeks yearly at Sunbury, which is one of those pleasant villages lying on the Thames, near Hampton Court. In the autumn, I could not help being much amused with those myriads of the swallow kind which assemble in those parts. But what struck me most was, that, from the time they began to congregate, forsaking the chimnies and houses, they roosted every night in the osier-beds of the aits of that river. Now this resorting towards that element, at that season of the year, seems to give some countenance to the northern opinion (strange as it is) of their retiring under water.* A Swedish naturalist is so much persuaded of that fact, that he talks, in his "Calendar of Flora," as familiarly of the swallow's going under water in the beginning of September, as he would of his poultry going to roost a little before sunset.

An observing gentleman in London writes me

* Swallows are always found near to rivers in considerable numbers, attracted by the abundance of insects which they capture on the wing. The conjecture of the Swedish naturalist is a proof how easily men's minds get wedded to theories, which they sometimes prostitute their talents to support.-ED.

:

word that he saw a house-martin, on the twentythird of last October, flying in and out of its nest in the Borough and I myself, on the twenty-ninth of last October (as I was travelling through Oxford), saw four or five swallows hovering round and settling on the roof of the county hospital.

Now, is it likely that these poor little birds (which perhaps had not been hatched but a few weeks) should, at that late season of the year, and from so midland a county, attempt a voyage to Goree or Senegal, almost as far as the equator? I acquiesce entirely in your opinion-that, though most of the swallow kind may migrate, yet that some do stay behind, and hide with us during the winter.*

As to the short-winged soft-billed birds, which come trooping in such numbers in the spring, I am at a loss even what to think about them. I watched them narrowly this year, and saw them abound till about Michaelmas, when they appeared no longer. Subsist they cannot openly among us, and yet elude the eyes of the inquisitive: and, as to their hiding, no man pretends to have found any of them in a torpid state in the winter. But with regard to their migration, what difficulties attend that supposition! that such feeble bad fliers (who the summer long never flit but from hedge to hedge) should be able to traverse vast seas and continents, in order to enjoy milder seasons amidst the regions of Africa!

November 4, 1767.

• See "Adanson's Voyage to Senegal." These individuals are the waifs and strays of swallow society; the rash, the impetuous, the imprudent, or the unfortunate; which occur in all associations, and who cease to be "known" by more fortunate swallows.-ED.