The monarch butterfly, a milkweed butterfly in the Nymphalidae family, is also called the common tiger, wanderer, and black-veined brown.
Monarch butterflies overwinter in Mexico, California, the U.S. Gulf Coast, Florida, and parts of Arizona and Virginia, where conditions support survival.
Adult monarchs feed on the nectar of various plants like:
Image source: Monarch Butterfly, David Slater, Flickr, Creative Commons Attribution
For more information, visit the full Wikipedia article: Wikipedia - [Monarch butterfly]