Monarch Butterflies Now Endangered In WI

Wisconsin’s state butterfly is endangered.

The International Union for the Conservation of Nature listed Monarch butterflies as endangered following a meeting on Thursday.

The group estimates that populations have declined between 22% and 72% over a decade. That’s due to a number of factors, including a loss of habitat and the use of pesticides.

Monarch butterfly caterpillars feed exclusively on milkweed plants.