The Making of Species 
likelihood that they have suddenly arisen and 
managed to establish themselves alongside of the 
parent species. 
The Curassows, Crax grayt, C. heckz, each 
of which is only known by a very few specimens, 
appear to be mutations of the female of the 
globose Curassow, Crvax globicera. The fact 
that when a female ekz bred in the London 
Zoological Gardens with a male g/odicera, the 
solitary young one which lived to grow up was a 
pure globicera, renders the assumption almost 
certain. 
The Chamba Monaul (Lophophorus chambanus) _ 
seems to be a mutation of the male of the 
common Monaul or Impeyan Pheasant (Lopho- 
phorus impeyanus), the common species of the 
Himalayas. 
The Three-coloured Mannikin (Junta malacca) 
of South India is probably simply a white-bellied 
form of the widely-ranging Black-headed Man- 
nikin (JZ. atricapilla), which has the abdomen 
chestnut like the back. Intermediate wild- 
caught forms have been recorded. 
The African Cordon-bleu (Zstrelda pheenicotzs) 
and Blue-bellied Waxbill (4. cyanogastra) would 
also seem to be mutations, as almost the only 
difference between them lies in the fact that 
the male of the former has a crimson cheek- 
patch, which is wanting in the latter. 
The Ringed Finch (Stzctoptera annulosa) of 
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