Are There Monarch Butterflies on Other Continents and Do They Migrate Too?

Monarch Butterfly Series — Part 2

When people think of monarch butterflies, they usually picture their iconic migration across North America. But monarchs are not limited to the United States, Canada, and Mexico—and their global story is more complex than many realize.

In this second installment of our monarch butterfly series, we explore where monarchs exist beyond North America and whether butterflies on other continents migrate the same way.

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Are Monarch Butterflies Found Outside North America?

Yes. Monarch butterflies (Danaus plexippus) are now found on multiple continents, though not all populations behave the same way.

Originally native to North America, monarchs expanded their range over the past two centuries and are now established in parts of Central and South America, Australia, New Zealand, several Pacific islands, and portions of Southern Europe.

This expansion occurred largely because milkweed—the only plant monarch caterpillars can eat—was introduced to new regions. Where milkweed grows, monarchs often follow.

You can learn more about monarch distribution through conservation organizations such as the World Wildlife Fund and Monarch Watch.

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Do Monarch Butterflies on Other Continents Migrate?

This is where monarch behavior begins to differ.

The long-distance, multi-generational migration seen in North America—where monarchs travel thousands of miles to overwinter in Mexico—is unique.

Monarch populations in places like Australia and New Zealand do not migrate in the same way. Instead, they tend to:

• Move short distances in response to local weather
• Breed year-round where milkweed is continuously available
• Enter brief periods of reduced activity rather than true long-distance migration

Scientists believe the need for extreme migration evolved specifically in North America due to seasonal temperature changes and the disappearance of milkweed during winter.

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Why North American Monarch Migration Is So Rare

Eastern North American monarchs depend on a very specific overwintering habitat within the Monarch Butterfly Biosphere Research in central Mexico.

These high-elevation forests provide a rare combination of conditions:

• Cool but stable temperatures
• High humidity to prevent dehydration
• Dense forest canopy that protects butterflies from wind and storms

Groups such as Journey North monitor this migration each year, helping researchers track population changes and migration success.

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Milkweed’s Role in Monarch Behavior Worldwide

Milkweed availability strongly influences whether monarchs migrate.

In regions where milkweed grows year-round, monarchs may stop migrating altogether. Continuous breeding can gradually weaken migratory behavior across generations.

This is one reason conservationists carefully study how milkweed distribution affects monarch populations, even within North America.

At The Butterfly Connection education and awareness are central to our mission. Sharing the monarch’s story through carefully preserved, framed specimens helps keep attention on this extraordinary species long after migration season ends.

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How This Fits Into the Monarch Story

Comparing monarch populations across continents gives scientists valuable insight into how migration develops, adapts, and sometimes disappears.

If you missed the first post in this series, you can read it here: The Quiet Season of the Monarch Butterfly.

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A Final Thought

Monarch butterflies may live on multiple continents, but the epic migration of North America’s monarchs remains unmatched in the insect world.

Understanding how monarchs behave elsewhere helps highlight just how biologically rare—and remarkable—this migration truly is.

In the next installment of this monarch series, we’ll explore why only monarch butterflies migrate this way—and why most other butterflies don’t.