44 How to Sex Cage Birds. 



Brazilian Blue Grosbeak (Guiraca cyanea). 



The sexes are entirely dissimilar. In the female the deep blue of 

 the mule, varied with brighter cobalt blue, being replaced by 

 ochreous brown on the upper parts, more reddish on the lower back, 

 rump, and upper tail-coverts, and by ochreous buff on the under 

 parts. 



The Common Greenfinch (Liyurinus chloris). 



The female is much duller than the male, and browner ; the 

 feathers of the head and mantle with dark shaft-streaks ; the under 

 parts are less yellow. 



Chinese Greenfinch (Ligwrinus sinicus). 



The female is altogether duller and browner than the male, the 

 ashy markings replaced by brown, the yellow on head and under 

 parts much less pronounced; the abdomen and thighs whitish; the 

 yellow on the wings nearly as in the male. In Japan there is a 

 larger form (/>. Kawarahiba), which chiefly differs in its superior 

 size with less vivid colouring. 



Lined Finch (Spermophila lineola). 



The female above is olive-brown instead of greenish-black, with 

 lighter upper tail-coverts; the flights and tail-feathers dusky, edged 

 with olive-brown ; lores and eyelids ochreous buff ; ear- coverts pale 

 olive-brown; cheeks and throat pale ochreous, browner towards 

 front of neck; breast and abdomen huffish-white tinged with ochre, 

 as also the under tail-coverts; sides of body olive-brown, thighs 

 ochreous brown ; under wing-coverts and axillaries dull whitish 

 tinged with yellow. 



