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Correlation, influence of, in the production of races. Corse, on the mode of fighting of the elephant. Corvus corone. Corvus graculus, red beak of. Corvus pica, nuptial assembly of. Corydalis cornutus, large jaws of the male. Cosmetornis. Cosmetornis vexillarius, elongation of wing-feathers in.
Gould has remarked, it probably is that such birds are generally of a shy disposition, as if conscious that their beauty was a source of danger, and are much more difficult to discover or approach, than the sombre coloured and comparatively tame females or than the young and as yet unadorned males. On the Cosmetornis, see Livingstone's 'Expedition to the Zambesi, 1865, p. 66.
With defenceless species, in which both sexes, or the males alone, become extremely conspicuous during the breeding-season, or when the males acquire at this season such long wing or tail-feathers as to impede their flight, as with Cosmetornis and Vidua, it certainly at first appears highly probable that the second moult has been gained for the special purpose of throwing off these ornaments.
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