5~:>.--, 



THE ROSE-CRESTED COCKATOO. 



Plyctolophl's HosAcr.rs. Vii.11,1,. 



In the depth of their bills, the strength and curvature 

 of the upper mandible, and the disproportionate short- 

 ness and thickness of the lower, the Cockatoos vie with 

 the more gorgeous Maccaws, which they also emulate 

 in size, habits, and behaviour. The naked space on 

 their cheeks is, however, reduced to a small circle sur- 

 rounding each of the eyes ; and their tail is short, and 

 perfectly square at the extremity. Their most remark- 

 able character consists in a tuft of elongated feathers, 

 rising from the back of the head, and capable of being- 

 raised or depressed at pleasure. By this crest they are 

 at once distinguished from all the other groups of the 

 Parrot family, with the exception of a New Holland 

 genus lately characterized by Mr. Vigors and Dr. Hor.s- 

 field, and differing from the other Cockatoos in the 



