The Making of Species 
Indian water-snake (Zvopzdonotus piscator) and 
the ‘Crow pheasant” cuckoo (Centropus sinensis), 
in the free state, and the Indian Roller (Coraczas 
indica) and the Pied Hornbill (Axthracoceros), 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” (Cadotes versicolor), would 
eat, both in captivity and in freedom, all 
‘“‘warningly-coloured” butterflies, not only the 
Danaine, but even Delzas eucharis and the pre- 
eminently nauseous Papzho aristolochie. 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 Danang 
readily in captivity, even when other butterflies 
could be had, which was not the case with most 
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