The monarch butterfly, known for its bright orange patterned wings, is in the middle of its migration from the northern U.S.

Monarch butterflies are famous for their annual migrations, but not all migrate. In recent years, more and more monarchs have been living and breeding year-round in California’s Bay Area, thanks in ...

Anurag Agrawal, an ecology and evolutionary biology professor at Cornell University, gave a talk about monarch butterflies and the ecological disasters that they highlight in the University of ...

Monarch butterflies may soon get federal protections after nearly a decade-long effort to preserve the species. The monarch's eastern migratory population has fallen about 80% in the past couple of ...

Every year, millions of monarch butterflies venture across North America – though in far smaller clusters than decades ago. Monarch populations have plummeted due to habitat loss, pesticide use and ...

A monarch butterfly that was released landed on a hibiscus flower at the home of Ed Miller and his wife, Linda. NEWPORT NEWS, Va. — Linda and Ed Miller’s enclosed back porch used to be a spot to ...

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An invasive weed is taking over gardens across Greater Boston. Black swallow-wort is having a deadly impact on wildlife, especially the monarch butterfly population, said Mass Audubon Senior ...

Monarch butterflies are famous for their annual migrations, but not all migrate. In recent years, more and more monarchs have been living and breeding year-round in California's Bay Area, thanks in ...

Professor Elizabeth Crone, Department of Evolution and Ecology, checks a non-native milkweed in the San Francisco Bay Area for monarch butterfly eggs and caterpillars. Known for long-distance ...