This Gray Cracker (Hamadryas februa), also called a Calico, comes from Costa Rica and is one of several Cracker species found all over Central and South America. We get about half a dozen different species, which vary in the shade of blue or gray on top and also in the color underneath. Unlike most butterflies, these rest with their wings open, usually upside down on a tree trunk, and their complex pattern helps them blend in with the bark. The males are said to make a loud crackling noise as they chase other males away from their territory, but we've never heard it. As you can see, they' like fermenting fruit.