OF NATURAL HISTORY. 483 



* do migrate ; and are ftill farther embarrafled to find, that fome do 



* not adually migrate at all *.' 



In another part of his work, Mr White fays : ' But we mud not 



* deny migration in general ; becaufe migration certainly does fub- 



* fift in fome places, as my brother in Andalufta has fully informed 



* me. Of the motions of thefe birds he has ocular demonftration, 



* for many weeks together, both fpring and fall : During which pe- 



* riods, myriads of the fwallow kind traverfe the Straits from north 



* to fouth, and from fouth to north, according to the feafon. And 



* thefe vaft migrations confift not only of hirud'mes (fwaliows), but 



* of bee-birds^ hoopoes^ oropendulos, or golden thrujhes, &c. &c. and 



* alfo many of ontfoft billed fummer birds of pajfage ; and, more- 



* over, of birds which never leave us, fuch as all the various forts of 



* hawks and kites. Old Belon, two hundred years ago, gives a cu- 



* rious account of the incredible armies of hawks and kites, which 



* he faw in the fpring-time traverfing the Thradan Bofphorus from 



* Afia to Europe. Befides the above mentioned, he remarks, that 



* the proceflion is fwelled by whole troops of eagles and vultures f.* 



Mr White likewife, with much propriety, remarks, that our in- 

 quiries concerning the migration of birds have been too much con- 

 fined to the fwallow tribes ; while little attention has been paid to 

 the {hort-winged birds of paffage, fuch as quails, red-ftarts, nightin- 

 gales, white-throats, black-caps, &c. All thefe, though feemingly 

 ill qualified for long flights, difappear in the winter, and not one of 

 them, notwithftanding their immenfe numbers, has ever been found 

 in a torpid ftate. 



3 P 2 To 



► White's Natural Hiftory of Selborne, pag. 6J^.—6S' 

 t Ibid. pag. 139. 



