What are mimic butterflies?

Batesian mimicry is an evolutionary process whereby a species changes its color or pattern through genetic mutation to closely resemble a toxic species. Butterflies are just one of the insects that use this behavior. They do it for protection. Common mimic butterflies include the viceroy, which resembles the monarch. The female tiger swallowtail, the red-spotted purple, the Diana fritillary and the spicebush swallowtail all mimic the chemically toxic pipevine swallowtail.