Van der Heide got her start at Cal Poly, tagging monarchs by numbering their wings in Sharpie and trying to find them later ...

An international collaboration to track individual monarchs kicked off this fall, including James Madison University.

For the first time in California, citizen scientists can join the effort to track monarch butterflies thanks to Blu+, a new ...

When this monarch butterfly hits the sky it won't be traveling alone. In fact, an energetic team of researchers will be ...

Scientists used tiny new sensors to follow the insects on journeys that take thousands of miles to their winter colonies in Mexico. Scientists used tiny new sensors to follow the insects on journeys ...

Monarch butterflies from the western United States have arrived in Santa Cruz and other parts of the California Coast, clumping in the thousands on branches of Monterey pine, coastal redwoods and ...

Every fall, millions of monarch butterflies drift across Texas skies on their way from Canada to Mexico. It's one of the longest insect migrations on the planet, and for many monarchs, Texas is the ...

MISSION, Texas (Border Report) — Wearing dark sunglasses, long sleeves and a wide-brimmed hat, Florida retiree Linda Cooper came prepared to gaze at butterflies in 90-degree weather Thursday at the ...

The tags weigh just 60 milligrams — about three grains of rice. Researchers have tagged more than 400 monarchs this year and ...