146 



TRICOLOUR-CRESTED COCKATOO 



Plyctolophus Leadbeaterl VIGORS. 

 PLATE XIII. 



Plyctolophus Leadbeateri, Vigors, Philos. Mag. 1831 p. 55. 

 Lear's Parrots. Cacatua Leadbeateri, Wag. Mon. Psitt. 

 in Abhand. 692, sp. 3. 



DISTINGUISHED by its tricoloured crest of scarlet, 

 yellow, and white, composed, like that of the other 

 Cockatoos, of long acuminate feathers, with the tips 

 directed forwards, and which can be erected and ex- 

 panded like a fan, or depressed at the pleasure of 

 the bird. It is a native of Australia, and was first 

 made known and described from a specimen which 

 came into the possession of Mr Leadbeater, well 

 known to ornithologists, and whose name Mr Vigors 

 has selected for its specific title. In size it fuHy 

 equals, or perhaps a little exceeds, the lesser Sulphur- 

 crested Cockatoo. The bill is of a pale greyish- 

 white ; the upper mandible strongly sinuated and 

 toothed ; the irides of a deep broivn ; the naked or- 

 bits whitish. The feathers at the immediate base of 

 the bill are crimson, forming a narrow band or fillet ; 

 those of the forehead are white tinged with red. 



