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

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. The monarch population in ... the Gulf of Mexico and try to land on oil rigs.” Monarch Butterfly Biosphere Reserve, a 139,019-acre sanctuary ...

The natural world is replete with hermaphrodites, animals that may outwardly appear male or female but have the reproductive organs of both. Their less common cousins are gynandromorphs ...