OWLS. 
247 
tlieir close and low manner of hunting, would be 
unnecessary. The ears have a very large conchal 
opening, and have an operculum of greater or less 
size ; and the whole can he thrown open at plea- 
sure, and exposes a large concave opening, which, 
in a time of complete silence, is admirably fitted 
to catch the slightest vibration of sound. 
White* or Barn Owl. 
The species which Mr Swainson has selected as 
typical, or exhibiting all the peculiarities of the 
nocturnal Raptores in their greatest development, 
is the common White or Bam Owl of Europe. 
