The Smith's blue butterfly may be tiny, but it's endangered in a big way ... Although the Smith's blue has been listed under the Endangered Species Act since 1976, the ongoing failure of government ...

The Xerces blue butterfly went extinct along the San Francisco coast some 80 years ago. But scientists have identified a ...

Despite captive-breeding and reintroduction efforts, this sun-loving coastal butterfly, once common throughout South Florida, is now one of the rarest insect species in North America. The Miami blue ...

The California Academy of Sciences used genetic testing to identify a blue butterfly species similar to the Xerces species ...

A recent study combining data from more than 76,000 surveys from 35 monitoring programs across the country found butterfly populations declined 22%.

A comprehensive study of U.S. butterfly populations shows dramatic declines in most species, but Pacific Northwest ecologists ...

All the butterflies were dead by Aug. 25. According to the Environment Ministry’s red list on endangered species, the Ogasawara blue butterfly was categorized as “Critically Endangered ...

The California Academy of Sciences used genetic testing to identify a blue butterfly species similar to the Xerces species that went extinct and disappeared from the San Francisco coastline.