For the first time, milkweed butterflies have been sighted feeding on live caterpillars—their own species' young. Researchers suggest they do this to increase their supply of mating pheromones.

The first of this year's southbound monarch butterflies are arriving at their overwintering grounds in central Mexico, though some still have yet to pass through Rogers County. A local native wildlife ...

Scientists and transport officials in Florida have planted 15,000 milkweed plants along roadsides to help monarch butterflies ...

Add Yahoo as a preferred source to see more of our stories on Google. With their relatively large 3- to 4-inch wingspan and bold orange-and-black coloration, monarch butterflies are one of the most ...

Monarchs, as caterpillars, prefer the leaves of milkweed. Milkweed produces glycoside toxins to deter animals from eating them, monarch have evolved immunity to these toxins. When they feed, monarch ...

Following the shorelines of the Great Lakes, monarch butterflies are gradually leaving Michigan as their instincts take them south. Millions of monarchs migrate from Mexico and the Gulf Coast each ...

Monarchs undergo a four-stage life cycle and rely solely on milkweed plants for their egg and caterpillar stages. Monarchs in eastern North America migrate up to 3,000 miles to overwinter in Mexico.