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, I think, to find that our small short-winged summer birds of passage are to be seen spring and autumn on the very skirts of Europe; it is 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.
My Sussex friend, a man of observation and good sense, but no naturalist, to whom I applied on account of the stone-curlew, œdicnemus, sends me the following account: "In looking over my Naturalist's Journal for the month of April, I find the stone-curlews are first mentioned on the seventeenth and eighteenth, which date seems to me rather late. They live with us all the spring and summer, and at the beginning of autumn prepare to take leave by getting together in flocks. They seem to me a bird of passage that may travel into some dry hilly country south of us, probably Spain, because of the abundance of sheep-walks in that country; for they spend their summers with us in such districts. This conjecture I hazard, as I have never met with any one that has seen them in England in the winter. I believe they are not fond of going near the water, but feed on earth-worms, that are common on sheep-walks and downs. They breed on fallows and lay-fields abounding with grey mossy flints, which much resemble their
