The butterflies resemble monarchs, a species on brink of extinction that shelters along California’s coast every winter. Yet the visitors are in fact a more prosperous insect called California ...

On the first day of a new year Lea Korsgaard, a Danish journalist, decided she would set out to see every species of ...

Normally, this time of year for Bay Area residents means blooms of orange poppies, graduation announcements and hand-wringing over the San Francisco Giants’ record. But this year there’s something ...

Butterfly counts and flowering times shift earlier in warmer, low-snow years. Volunteers now lead Mt. Rainier surveys after federal research funding ended. Butterflies serve as effective indicators of ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE: Tortoiseshell butterfly pictured at close range. (Russ Aguilar/500px/Getty Images) On Mother's Day, the thick blanket of ...