OWLS 247 



their 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 Bam 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 Barn Owl of Europe. 



