To spot a Baltimore checkerspot, look for a black butterfly with a band of large orange spots along the wing edges and inner bands of white spots. Typically, Baltimore checkerspot butterflies are ...

The darling of famous biologist Paul Ehrlich, the Bay checkerspot butterfly has enjoyed plenty of scientific attention over the years. In fact, since 1960, its population size has probably undergone ...

The plight of the Quino checkerspot butterfly has been described by a biologist as “four engines out and about 10 seconds to impact.” The Quino checkerspot was once one of the most common butterflies ...