Drawing on the expertise of lepidopterists and other such experts at Montana State University's Big Sky Institute and the National Biological Information Infrastructure program, this site is a database that provides easy-to-use information about over 2800 species of butterflies and moths. On the site, visitors will find dynamic distribution maps showing verified species occurrences, photographs...

Where do butterflies journey each year? Many in North America end up in a sanctuary in the highlands of Mexico and NOVA has the complete story on this remarkable migration. To capture this story, NOVA's filmmakers used a helicopter, ultralight, and hot-air balloon for amazing aerial views along the transcontinental route. Visitors can watch the entire program here, including a number of great...