112 How to Sex Cage Birds. 



Western Slender-billed Cockatoo {Licmetis pastinator). 



No examples are recorded in the Museum Catalogue, but the 

 structural differences between the sexes are probably as in the 

 preceding species. 



Subfamily Calopsittacinae (Cockatiels). 



The Cockatiel (Calopsittacus novcs-hollandice). 



The female is paler and altogether rather browner than the male ; 

 the forehead and cheeks only faintly washed with yellow ; the 

 lower abdomen and under tail-coverts with dark grey and pale 

 yellow bands, the lower back, upper tail-coverts, and four middle 

 tail-feathers grey with irregular narrow whitish bands ; the lateral 

 tail-feathers darker, mottled, and barred with yellow; outer tail- 

 feathers yellow, the inner web irregularly barred with black. Of 

 course there are also differences in the beak, as anyone will discover 

 pretty quickly if he handles both sexes. The bite of the female is 

 distinctly painful. 



Chapter XXII. 

 PARROT-LIKE BIRDS (Psittacidce). 



Subfamily Conurinae (Macaws and Conures). 



The Parrotlets and the Brotogerys group are also placed in the same 

 subfamily ; all the Conurinae are natives of the New World. 



Hyacinthine Macaw (Anodorhynchus hyacinthinus). 



I found no sexed examples in the Museum, but there is no doubt 

 that the female would be slightly smaller than the male, with a 

 rather smaller and shorter beak, probably rather narrower. 



Lear's Macaw (Anodorhynchus leari). 



I only found a sexed male of this species. The female probably 

 differs as indicated for the preceding species. The birds of this 

 genus are not well represented in the national collection, and but 

 few examples are sexed. 



Glaucous Macaw (Anodorhynchus ylaucus). 



Only a male was sexed, but the probable female is slightly 

 smaller, and has a shorter but equally broad beak, with a shorter 

 but sharper terminal hook. In this example the throat is browner 



