The monarch is the only butterfly known to make a two-way migration as birds do. Unlike other butterflies that can overwinter as larvae, pupae, or even as adults in some species, monarchs …

Monarch butterfly migration is the phenomenon, mainly across North America, where the monarch subspecies Danaus plexippus plexippus migrates each autumn to overwintering sites near the …

The monarch's migration is driven by seasonal changes. Daylength and temperature changes influence the movement of the monarch. In all the world, no butterflies migrate like the …

Each fall, millions of monarch butterflies leave their summer breeding grounds in the northeastern U.S. and Canada and travel upwards of 3,000 miles to reach overwintering grounds in...

We hope you enjoy this interactive map which shows the amazing migrations of monarch butterflies. You can see where they fly, the urgent threats they are facing, and how your …

Dec 23, 2025 · The magnetic compass is the last unknown sense in migrating animals. For some scientists, the monarch butterfly is leading the way.

Mid-August typically marks the start of fall migration for millions of monarch butterflies. Adult monarchs are partway through their lifecycle, but their reproduction is on hold.

Aug 29, 2025 · Migrating monarchs cluster together in trees at night, forming what is called a roost. A roost may have a handful of butterflies or more than you can count. Sometimes a …

Mar 18, 2025 · Each year, millions of migratory eastern monarch butterflies embark on a breathtaking 3,000-mile migration from North America to the Monarch Butterfly Biosphere …

Dec 4, 2025 · How do monarch butterflies grow and change during their life cycle? Why do monarch butterflies migrate, and how far can they travel?