°F BIRDS. si!) 
T hey collect infedls in a pouch under their 
I tongue, and fome chace in higher regions of the air 
than others of their tribe; though they have been 
| obferved flitting rapidly very low for hours to¬ 
gether, over pools and ftreams, in purfuit of the 
phryganse, ephemerae, and libellulae [infeels,) juft 
emerged from their larva /late. 
They are on the wing all day long, in gentle 
rains, whence we may infer, that their feathers 
are capable of refilling much wet. In windy 
weather, or heavy /bowers, they confine them- 
felves to their ne/ls. 
When they arrive in the fpring, their plumage 
is of a glofly foot colour, except the chin, which 
is wnite \ but befoie they leave us, by being 
fo continually in the fun. it becomes weather¬ 
beaten, and faded. They return again glofly the 
next feafon j hence, it is probable, that they do 
not retire to funny climates, -and this feems fup- 
ported, by their difappearing from the fouthern 
parts of Spain, before they become invifible with 
us. Do they withdraw to moult, and to reft 
from the fatigue of fome months parted in un- 
ceaflng activity ? 
They breed, as obferved before, but once in a 
feafon, and produce only two young ones. 
They are rearlefs whilft haunting their nefting 
