Black swallowtail butterfly. Photo by Dan Hemenway. Just as monarchs famously prefer milkweed for food and egg-laying, swallowtail butterflies also have a preferred food as caterpillars. They prefer ...

Know your elephant hawk moth from your painted lady butterfly. Discover more about the world of butterflies, moths and their caterpillars, and what you can do to give them a helping hand. Who's ...