VERTEBRATA. 



337 



10. Psittaci, or Parrots. These birds have a strong, 

 arched upper bill, ivith a cere at the base, a fleshy, thick, 



FIG. 322. Head of a Fly-catcher (Tyrannux). 



and movable tongue, and paired toes. They have, usual- 

 ly, brilliant plumage. They live in trees and feed on 

 fruits. Such are the Parrots, Paroquets, and Cockatoos. 

 11. Insessores, or Perchers. This order is the most nu- 



FIG. 323. Goat-sucker (Caprimulgug). 



