I do a yearly program on butterfly biology and identification every July as part of a program called “Wednesdays in the Wild”. It is actually at a nature center and not very wild. Part of the fun is an opportunity for novices to swing the net and observe butterflies closely.
One of the butterflies caught and released was a Viceroy, Limenitis archippus. Viceroy caterpillars feed on willows and poplars, sequestering the salicylic acid for defensive purposes. The males are territorial and engage in bumping and collisions in flight. Viceroys in Indiana mimic the Monarch Butterfly. Viceroys in other areas are mimics of other butterflies.
On Saturday, July 16, 2016, we conduct our annual butterfly count. Hopefully we will see more viceroys there.