monarch butterflies

Citizen Science and the Monarch Butterfly: The Milkweed Mapping Project

Monarch Butterfly on Milkweed by Stephanie McKnight/Xerces

The fight to save the Monarch Butterflies just got a new weapon. You.

Welcome Back Monarchs Day 2015

A warm autumn sun shines on monarch butterflies overwintering at Natural Bridges State Beach in Santa Cruz. Photo by Alpha Geek on Flickr.

The monarch butterflies are back once again to overwinter at Natural Bridges State Beach, and their loyal fans have planned a party.

Update: Migration Festival Moving Indoors

It's all but certain to rain tomorrow, but that won't stop the party at Natural Bridges.

A Migration Festival for The Books

A monarch butterfly on coyote brush. Photo by Mike Baird on Flickr.

On Feb. 8, the "mini Galapagos" of Natural Bridges celebrates the butterflies, birds, whales and other creatures that sojourn through Monterey Bay.

Tour Through A Mess of Monarchs

The monarchs have arrived at Natural Bridges—the terminus of a 2,000-mile journey from the Rocky Mountains. Photo by Hanae Armitage.

Thousands of butterflies create a peaceful chaos at Natural Bridges.

Monarch Butterflies

Monarch butterflies take several generations to complete a migration cycle. Photo by Clinton and Charles Robertson via Wikimedia Commons.

The monarchs are coming! The monarchs are coming!

Butterfly Down U.S.A.

Adult monarch butterflies live on nectar from a number of different kinds of flowers, but larvae need milkweed. Creative Commons photo.

March 27, 2013—Mexico's overwintering monarchs aren't the only ones struggling.