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

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

Add Yahoo as a preferred source to see more of our stories on Google. It's about that time of year for Oklahomans to spot monarch butterflies, the orange-and-black-winged insect known for their ...

Every March, millions of monarch butterflies begin a 3,000-mile migration from central Mexico to Canada, but no single butterfly finishes the journey. It takes three to four generations working in ...

Monarch butterflies are returning to Michigan for the summer after migrating from Mexico. Michiganders can support monarch butterflies by planting milkweed, tracking sightings, and donating to ...

Monarch butterflies just scored a modest win in Mexico's forests. A new World Wildlife Fund Mexico survey finds that eastern ...

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

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 ...