Every March, millions of monarch butterflies begin a 3,000-mile migration from central Mexico to Canada, but no single ...

Suitable milkweed habitat in Mexico may shift south, fracturing existing migration routes and possibly pushing some ...

A newly released survey of the eastern monarch’s 2025-26 winter population in Mexico showed a 64% increase over 2024-25.

Two new reports estimate a 64% increase in species population and a significant decrease in forest degradation in the butterfly's winter home ...

Monarch Watch is contributing to a comprehensive study of the Monarch butterfly migration by tracking butterflies with tiny ...

The monarch butterfly, Texas' official state insect, is in the middle of its 2,200 mile migration from Canada to Mexico — and you may be just in time to witness the remarkable journey. When is peak ...

Across North America, monarch butterfly populations will begin their journey southward to warmer winter climates in Mexico, travelling across much of the United States, including Oklahoma, along their ...

Amid the eucalyptus groves at Natural Bridges State Beach in Santa Cruz, local bug enthusiast Sasha Hernandez squinted through the draping green leaves, searching for flashes of black and orange — the ...

Each year, monarch butterflies migrate between Canada and Mexico, a generational flight with deep environmental resonance.

A daring surgical procedure has given a doomed monarch butterfly a new lease of life. The delicate operation was captured on ...

Learn facts about the monarch butterfly, including how how to tell male and female monarchs apart and if monarchs are ...