Papilio is an enthusiastic and adventurous caterpillar. Then she's a blob of goo, hanging out in her chrysalis. Her main goal in life? Metamorphose into a butterfly and learn to fly! Papilio is a ...

The Sacramento Mountains checkerspot butterfly is critically endangered, with the last known larva living in a lab in New ...

The monarch butterfly life cycle begins with a whirl of wings in the heat of the summer sun. As a female monarch sips nectar from a wildflower, a male hovers nearby. A pheromone is released from tiny ...

Spotting a butterfly in your garden or while enjoying a nature walk has long been a sign of hope and renewal. The ...

We have just learned that the iconic monarch butterfly may be placed on the U.S. Fish and Wildlife Service’s endangered species list. The significant decline in the numbers of this beloved species, ...

Biologists deposited caterpillars of the rare frosted elfin butterfly on its host plant, the sundial lupine, in north Florida. Photo from the Florida Fish and Wildlife Conservation Commission ...