Butterflies are fragile and vulnerable to predation by all kinds of critters, from birds and reptiles to spiders and other ...

Urban monarchs formed isolated populations with limited impact on migratory butterflies, suggesting city habitats can support ...

Monarch butterflies are amazing insects of North America with a unique two-way migration. These butterflies are famous for ...

Monarch butterflies are beautiful backyard favorites—but they’re also toxic. Monarchs lay their eggs on milkweed plants, where caterpillars devour leaves containing poisonous cardiac ...

Monarch butterflies prefer milkweed primarily because of its toxins. Milkweeds produce toxins called cardenolides and cardiac glycosides, both dangerous to most organisms. However, monarchs can ...

Monarch butterfly populations have been declining ... You can help them by planting free narrow leaf milkweed, available from the Santa Monica Mountains Fund. A must do: Monarch populations ...