Butterflies fill our world with beauty. They also play an important role in the functioning of our ecosystems, and are significant indicators of environmental health at the local level. We will discuss the basics of butterfly biology then go for a hike to find and identify some of the species who make their home in the Irish Hills. Close focusing binoculars will help, but are not essential. Also many butterflies love wet meadows and fens, so come prepared to walk on water.