North America is home to many iconic living species: bald eagles, grizzly bears, bison and monarch butterflies. But monarch butterflies in the U.S. might not be around much longer. The migratory ...

Maybe science has misunderstood the dining style of big monarch butterfly caterpillars. What insect watchers have called defense against the toxic latex a milkweed plant oozes may not be avoidance at ...

When oleander aphids infested tropical milkweed, monarch butterflies laid fewer eggs on the plant, and the caterpillars developing on those plants were slower to mature. Many gardeners will tell you ...

According to a study from UC Riverside and UC Berkeley researchers, some predators of monarch butterflies have evolved through genetic mutations that allow them, too, to eat poisonous milkweed, making ...

Across the Midwest, some city codes threaten people with fines for having milkweed on their property. But experts say many places have dropped those rules to support monarchs with urban and suburban ...

PETOSKEY, MI – Lauri Juday carries around little packets of common milkweed seeds and gives them to anyone who promises to plant them. That’s because monarch butterflies need native milkweed plants to ...

MUNCIE, Ind. – Milkweed has received a lot of attention in recent years, mainly due to its status as a host plant for monarch butterfly caterpillars. monarch caterpillars rely exclusively on milkweed ...

Oliver Hernandez poses with a common milkweed plant in his front yard in 2020. A tiny, young monarch caterpillar and even tinier monarch eggs are visible on the underside of a leaf. Across the Midwest ...