One year ago, a team of earnest conservationists released a few dozen silvery blue butterflies at the Presidio, hoping they ...

Biologists waded through knee-high vegetation in Florida until they reached a spot where purple flowers grew in cone-like ...

Monarch butterflies are migrating through parts of the South and Midwest as the U.S. Fish and Wildlife Service seeks public ...

With approximately 11,000 species, birds are one of the most diverse animal classification groups characterized by their ...