The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

and they help the male attract female mates. These butterflies most famous for their seasonal migration when they travel from ...

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 ...

Like many other insects, a single female monarch can lay hundreds of eggs. And because milkweed still is readily available, monarchs appear to be able to bounce back each year despite fewer numbers of ...