It has been convincingly demonstrated by observations and experiments that crypsis or mimesis among insect species has been evolved as a protective device against visual predation. In my study of great tits, however, these well-camouflaged insects comprised a large part of the nestlings’ diet, suggesting that the parent tits had little or no problem finding these insects that perfectly mimic pieces of branch or bark of a tree. Here, I consider how this apparent paradox can be understood in terms of an evolutionary process.