On the northwest corner of Montezuma Mesa, Marshal Hedin and I are easing down a steep stairway, scorched by the noonday sun. A biology professor at San Diego State, Hedin specializes in arachnids. He’s already …
November 20, 2019
The Quino checkerspot butterfly, once prevalent in Southern California, was thought extinct 30 years ago, then showed up one day in the San Diego National Wildlife Refuge.
Posted November 20, 2019
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San Diego's changing bugs