Monographers, come from whence they may, have, I think, fair presence to challenge some regard and approbation from the lovers of natural history; for, as no man can alone investigate all the works of nature, these partial writers may, each in their department, be more accurate in their discoveries, and freer from errors, than more general writers; and so by degrees may pave the way to an universal correct natural history. Not that Scopoli is so circumstantial and attentive to the life and conversation of his birds as I could wish: he advances some false facts; as when he says of the hirundo urbica that 'pullos extra nidum non nutrit.' This assertion I know to be wrong from repeated observations this summer, for house-martins do feed their young flying, though it must be acknowledged not so commonly as the house-swallow;and the feat is done in so quick a manner as not to be perceptible to indifferent observers. He also advances some (I was going to say)improbable facts; as when he says of the woodcock that, 'pullos rostra portat fugiens ab hoste.' But candour forbids me to say absolutely that any fact is false, because I have never been witness to such a fact. I have only to remark that the long unwieldy bill of the woodcock is perhaps the worst adapted of any among the winged creation for such a feat of natural affection.
(*Annus Primus Historico-Naturalis.)
I am, etc.
Letter XXXII
T Thomas Pennant, EsquireSelborne, October 29, 1770.
Dear Sir,After an ineffectual search in Linnaeus, Brisson, etc., I begin to suspect that I discern my brother's hirundo hyberna in Scopoli's new discovered hirundo rupestris, p. 167. His description of ' Supra murina, subtus albida; rectrices macula ovali alba in latere inferno;pedes nudi, nigri; rostrum nigrum; remiges obscuriores quam plumae dorsales; rectrices remigibus concolores; cauda emarginata, nec forcipata,' agrees very well with the bird in question; but when he comes to advance that it is 'statura hirundinis urbicae,' and that 'definitio hirundinis ripariae Linnaei huic quoque convenit,' he in some measure invalidates all he has said; at least he shows at once that he compares them to these species merely from memory: for I have compared the birds themselves, and find they differ widely in every circumstance of shape, size, and colour.
However, as you will have a specimen, I shall be glad to hear what your judgment is in the matter.
Whether my brother is forestalled in his nondescript or not, he will have the credit of first discovering that they spend their winters under the warm and sheltery shores of Gibraltar and Barbary.
Scopoli's characters of his ordines and genera are clear, just, and expressive, and much in the spirit of Linnaeus. These few remarks are the result of my first perusal of Scopoli's Annus Primus.
The bane of our science is the comparing one animal to the other by memory: for want of caution in this particular, Scopoli falls into errors: he is not so full with regard to the manners of his indigenous birds as might be wished, as you justly observe: his Latin is easy, elegant, and expressive, and very superior to Kramer's.*(* See his Elenchus vegerabilium et animalium per Austriam inferiorem, etc.)I am pleased to see that my description of the moose corresponds so well with yours.
I am, etc.
Letter XXXIII
To Thomas Pennant, EsquireSelborne, Nov. 26, 1770.
Dear Sir,I was much pleased to see, among the collection of birds from Gibraltar, some of those short-winged English summer birds of passage, concerning whose departure we have made so much inquiry. Now if these birds are found in Andalusia to migrate to and from Barbary, it may easily be supposed that those that come to us may migrate back to the continent, and spend their winters in some of the warmer parts of Europe. This is certain, that many soft-billed birds that come to Gibraltar appear there only in spring and autumn, seeming to advance in pairs towards the northward, for the sake of breeding during the summer months; and retiring in parties and broods towards the south at the decline of the year: so that the rock of Gibraltar is the great rendezvous, and place of observation, from whence they take their departure each way towards Europe or Africa. It is therefore no mean discovery, Ithink, to fund that our small short-winged summer birds of passage are to be seen spring and autumn on the very skirts of Europe; it is a presumptive proof of their emigrations.
Scopoli seems to me to have found the hirundo melba, the great Gibraltar swift, in Tirol, without knowing it. For what is his hirundo alpina but the afore-mentioned bird in other words? Says he, 'Omnia prioris' (meaning the swift); 'sed pectus album; paulo major priore.' I do not suppose this to be a new species. It is true also of the melba, that 'nidificat in excelsis Alpium rupibus.' Vid.
Annum Primum.
