The Making of Species 



Indian water-snake (Tropidonotus piscator) and 

 the "Crow pheasant" cuckoo (Centropus sinensis), 

 in the free state, and the Indian Roller (Coracias 

 indica) and the Pied Hornbill (Antkracoceros), in 

 captivity, eat the warningly-coloured toad. On 

 the other hand, a captive Racket-tailed drongo 

 rejected toads when offered to it. The common 

 cuckoo is well known to feed on hairy and 

 " warningly-coloured" caterpillars. 



Finn has also seen the glossy cuckoo in 

 Zanzibar devouring black-and-yellow caterpillars. 

 Moreover, in America crows are found to 

 select deliberately highly polished and strongly 

 flavoured beetles. Yet again, wasps are preyed 

 upon by bee-eaters, and also eaten by our 

 common toad. In India, Finn found, by many 

 experiments, that the common garden lizard, 

 or " bloodsucker" (Calotes versicolor\ would 

 eat, both in captivity and in freedom, all 

 " warningly-coloured " butterflies, not only the 

 Danaince, but even Delias eucharis and the pre- 

 eminently nauseous Papilio aristolochice. That 

 this reptile is a great enemy to butterflies is 

 rendered probable by the frequent occurrence of 

 specimens of these insects with its semicircular 

 bites in their wings. 



Further, Finn found that bulbuls, the com- 

 monest garden birds in India, ate the Danaince 

 readily in captivity, even when other butterflies 

 could be had, which was not the case with most 



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