Predators ignore peculiar prey

It's sort of like the idea that if you dress weird when you report for jury selection, you won't get selected. According to this article in Eureka Science News:

Rare traits persist in a population because predators detect common forms of prey more easily. Researchers writing in the open access journal BMC Ecology found that birds will target salamanders that look like the majority – even reversing their behavior in response to alterations in the ratio of a distinguishing trait.