o F B I R D S. 1 9 1 
4 being reciuitec' by a night’s refl, they took their flight in 
1 the morning.’ 
Mr. White, an obfervant Natural!!*, and the author of 
an ingenious work, infilled, The Natural Hiflory and An¬ 
tiquities of Selborne, on Michaeltnas-day, 1768, early in 
the morning, which was very mifly, on a large wild heath, 
faw numberlefs Swallows cluflered on the bullies; the mo¬ 
ment the fun broke out, they were inflantly on the vieg, 
and proceeded with an eafy, and placid flight, towards the' 
fea. After this he faw no more flocks, only now and then a 
flraggler. See Philvfophica .1 TranfaPlions, volume ji, part 0 
page 459. 
In Nairn’s Voyage to America, when he had pafTed over 
about two-thirds of the Atlantic Ocean, on the l'econd of 
September, a Swallow fettled on his {hip. 
This is, at leaft, a ftrong prefumption of their power to 
perform a very diflant flight. 
hi favour of t/iefecond opinion, that they retire to caserns 
and the hollows oj rocks, and pafs the winter there, tor bid. 
Several authorities are quoted. Ariflotle aflferts, that many 
have been found under thofe circumflances, without a Angle 
feather upon their bodies. Albert, Auguflin, Nyphus, 
Gafpard, Heldelin, and others, aflert, that Swallows have 
often been found in Germany, in a torpid (fate, in the hol¬ 
lows of trees, and even in their nefis. 
Mr. Collinfon, in the 53d volume of the Philofophical 
Tranfa&ions, page lot, mentions the teflimony of three 
gentlemen, who fay, that a number of Sand Martins were 
drawn out of a cliff, on the banks of the River Rhine, in 
March 
