172 DENIZENS OF THE FOREST 



imitate almost any bird-call, even the screech of the Crowned 

 Hawk Eagle. 



It feeds chiefly on insects, varied by a few berries and 

 forest fruits. 



Its nest — ^much like that of the preceding species — ^is 

 either situated on a rocky ledge on the side of a krantz (as 

 depicted in the photograph), or on a sloping tree trunk or 

 stump. 



The eggs, generally three in nunaber, vary from an olive 

 greenish-brown to a clear glossy russet-chocolate. 



The Natal Eobin-Chat {Cossypha natdensis) is blue-grey 

 above ; head orange-brown streaked with bluish ; nape and 

 rump orange-brown ; upper tail-coverts chestnut ; entire 

 under-surface orange-red. 



This species ranges from Durban to Mombasa in the East, 

 and from Benguela to Loango in the West. 



It resembles the former bird in habits and nidification. 



The Brown Eobin-Chat {Cossypha signata) is chocolate- 

 brown above ; a bar of white on the wing ; a white eye- 

 brow, above which there is a black line ; under-surface 

 white ; throat, breast and sides of body ashy. Length, 7 

 inches. 



This is a retiring bush-loving bird of the Eastern Cape 

 Colony and Natal. 



In the Albany Kloofs it is not uncommon. The eggs are 

 greenish-white, covered with pink-grey blotches, chiefly at 

 the obtuse end. 



The Black Bush Robin {Tarsiger silens) has the upper 

 parts black, except the wing, which is adorned with a white 

 patch ; throat and under tail-coverts white ; breast and 

 abdomen grey. The female has the black of the male 

 replaced by brown. 



