The annual migration south for monarch butterflies peaks in late September. Here's how to watch for the regal butterfly.

Monarch butterflies are making their annual journey north out of Mexico to their summer breeding grounds. See where they've been spotted in Oklahoma.

Renowned for their incredible migration of over 2,200 miles between Canada and Mexico, the monarch butterfly is one of the most recognizable species in the nation—and their journey is currently ...

Every year, for millions of years, a huge number of painted lady butterflies have migrated thousands of miles across Europe, the Middle East and Africa. Though they've been a common sight throughout ...