56 
At first view, this species appears very large ; this is,, 
in a great measure, owing to the fulness of its plumage. 
Its horns, which distinguish it from all others, are com- 
posed of six feathers each, which rise about an inch high, 
variegated w 7 ith yellow and black, and which it can erect 
or depress at pleasure. ' The breast and belly are of a dull 
yellow, marked with slender brown spots : the back and 
coverts of the wings are varied with deep brown and yel- 
low. 
This bird usually breeds in caverns, hollow trees, or 
ruined turrets. It is common in the north of Europe,, 
and America® 
