YELLOW-RUMPED FLY-CATCHER. 
thers, except the two middlemost, which are 
black, have the middle pans of their inner 
webs white, their tips and bottoms being 
blackish. The covert-feathers on the upper 
side oi^ the tail are black. The legs and feet 
are made as in most other small birds, and of 
a dusky colour.'* 
It has been judiciously remarked by BufFon, 
that the useful destination of the Fly-Catchers 
will occur to the most superficial observer. 
The insert tribes elude the interference of 
man ; and, though despicable as individuals, 
they often become formidable by their num- 
bers. I nstances are recorded of their multi* 
plying to such an amazing degree as to darken 
the air; of their devouring the entire vegeta- 
ble produdllons ; and, of their carrying in 
their train the accumulated ills of famine and 
pestilence. Happily for mankind, such cala- 
mities are rare, and Nature has wisely pro- 
vided the proper remedies. Most birds search 
for the eggs of inse6ls ; many feed on their 
groveling larvae ; some subsist on their cms- 
taceous chrysalides ; and the Fly- Catchers 
seize them after they escape from prison, ex- 
ulting 
