84 



How to Sex Cage Birds. 



THE COMMOK JAY. 



The Jays. 

 Common Jay (Garrulus glandarius). 



The female chiefly differs from the male in its distinctly broader 

 and shorter bill. This character also serves to distinguish the 

 other species of the genus. 



Blue Jay (Cyanocitta cHstata). 



The bill of the female is distinctly shorter than that of the male, 

 and, when viewed in profile, is seen to be noticeably deeper. This 

 difference will also serve to separate the sexes of other species in 

 this genus. 



Blue-bearded Jay (Cyanocorax cyanopogon). 



I could discover no sexed specimens in the British Museum series, 

 but the sexes doubtless differ, as in the following: — 



Pileatkd Jay [Cyanocorax chrysops).* 



When viewed from above, the hill of the female is distinctly 

 broader than that of the male, hut there seems little, if any, difference 

 in its length. 



* This is the scientific name given to the species in the Museum Catalogue, 



