Monarch Butterflies

a photo of a monarch butterfly
This monarch butterfly (Danaus plexippus) shows bright protective coloration to discourage predators. As a caterpillar it fed on milkweed and retained toxins that can make predators very ill.

Photo courtesy of Rocky Mountain National Park.

Last updated: March 31, 2012

Contact the Park

Mailing Address:

1000 US Hwy 36
Estes Park, CO 80517


(970) 586-1206
Through winter, the Information Office is open 8:00 am–4:30 pm Mon–Fri. Recorded Trail Ridge Road status: (970) 586-1222.

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