Haiyong Cai (China) notices the shimmery blue colours of eros blue butterflies basking among the vegetation. While wandering through an alpine meadow, Haiyong spotted a patch of blue among the grass.

the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up among butterfly enthusiasts when a photographer discovered ...

Sand Mountain blue butterflies live in only one place on Earth — within and near the dunes of “Singing” Sand Mountain in Nevada. But over the past three decades, extensive off-road vehicle use on ...