Monarchs traveled to a remote part of Mexico, a journey they've made for thousands of years, and wintered there. Now tens of ...

The annual migration of monarch butterflies is one of science's great mysteries: millions of monarchs know the correct path ...

The monarch butterfly life cycle begins with a whirl of wings in the heat of the summer sun. As a female monarch sips nectar ...

If there is no bird more American than the eagle, there is no butterfly more American than the monarch. Breathtaking and resilient, the monarch butterfly completes one of the most astounding ...

Furthermore, ARS researchers in Fargo are assessing artificial insemination techniques for female butterflies using cryopreserved sperm cells from male butterflies. The monarch butterfly ...

A male, right, attempts to mate with a female ... pushed into the Gulf of Mexico and try to land on oil rigs.” Monarch Butterfly Biosphere Reserve, a 139,019-acre sanctuary carved out of ...