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

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

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

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

Biologists have attached tiny trackers to five of Goleta’s beloved monarch butterflies to track behavior, for the first time ever along the Central ...

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 migrate to California each fall to escape cold weather and cluster in coastal groves from October to February. Key viewing spots include Natural Bridges in Santa Cruz, Pismo State ...

A monarch on a maximilian sunflower in the Todd Waterfowl Production Area in the Kulm Wetland Management District. (USFWS photo) A proposal to list the monarch butterfly as threatened under the ...

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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 ...

The flapping wings of millions of monarch butterflies at the Monarch Butterfly Biosphere Reserve in Michoacán, Mexico, create a fluttering sound that Alfonso Alonso describes as “magical.” The ...

If you see a monarch butterfly in your Wichita yard, you might want to take an extra long look, because this may be the last month of the year you’ll see them flying around your garden. The monarch ...