New York City veterinarians performed a wing transplant procedure on a monarch butterfly in a video that's since gone viral.

A group of Japanese researchers have succeeded in building a fully functional replica model -- an ornithopter -- of a swallowtail butterfly, and they have filmed their model butterfly flying. A group ...

On the eastern slope of the Sierra Nevada Mountains, near Truckee, California, a pierid, alfalfa butterfly (Colias eurytheme Boisd.) provides an edible but evasive model for a mimic, the short-horned ...