The young, which are fed with small fishes, shrimps, and insects, separate from the old birds when fully fledged, and do not again associate with them until the following spring, when both are found breeding in the same places. It seems quite curious to see these young birds in winter, during boisterous weather, throwing themselves into the remotest parts of estuaries, and even visiting salt-water ponds at some distance from the sea, as I have often seen them do at Charleston, in South Carolina, when accompanied by my friend the Rev. Dr BACHMAN. Their plumage is then so very different from that of the old birds, that one might readily believe them to be of another species, did he not observe that their mode of flying and their notes are the same. Not less strange is it, that on such occasions none of the old birds are to be seen in the place, they having remained, braving the fury of the tempest, on the outer harbours. In the beginning of winter, young birds also sometimes ascend the Mississippi as far as Natchez; and in the same manner betake themselves to all the large lakes bordering the Gulf of Mexico. There, as well as elsewhere, you see them plunge into the water, and instantaneously secure their prey, rise as quickly, and dash into another spot hard by, whenever food happens to be abundant. I have many times seen the Common Tern suddenly fly up and come close over a man or a dog, without the least apparent provocation, indeed when far distant from its nest, and then pass and repass repeatedly within a few yards, emitting a plaintive cry, as if its eggs or young were in the immediate vicinity. At other times, when the birds were yet distant from their young, and carrying fish in their bills, they would, on seeing a man, round to, drop their food, and perform the same evolutions. I, however, know nothing more remarkable of this species of Tern, than that it should breed, as I know from personal observation to be the case, along the whole of our Atlantic coast, in suitable places, from Texas to Labrador. When travelling in stormy weather, they skim over the surface of the water, moving rapidly and close together; whereas in fine weather, they rise high, and proceed in a straggling manner. Now and then I have seen them alight among Tringas of different species, as well as among Razor-billed Shearwaters, on outward sand beaches. STERNA HIRUNDO, _Linn._ Syst. Nat., vol. i. p. 227.—_Lath._ Ind. Ornith., vol. ii. p. 807.—_Ch. Bonaparte_, Synopsis of Birds of the United States, 354.—_Richards. and Swains._ Fauna Bor. Amer. vol. ii. p. 412. GREAT TERN, STERNA HIRUNDO, _Wils._ Amer. Ornith., vol. viii. p. 76, pl. 60, fig. 1. GREAT or COMMON TERN, _Nuttall_, Manual, vol. ii. p. 271. Adult Male. Plate CCCIX.