There aren't enough to block out the sun, but social media posts out of the Lake Tahoe area show enough swarming butterflies to get just about anyone who encounters them to pull over and start taking ...

Millions of butterflies are dancing through the skies above the Lake Tahoe Basin, delighting locals and tourists alike. The species is called the California tortoiseshell (Nymphalis californica) and ...

A flash of orange darted between blue broadleaf lupine, magenta paintbrush and pink-white mountain daisies before the small butterfly disappeared into the sky. “That’s another California Tortoiseshell ...

SOME time late in last autumn, a tortoiseshell butterfly took refuge in a small bath room in this house, established itself on, the ceiling, and there remained, immovable, throughout the winter. On ...

One of Britain's best-loved butterflies has suffered a "quite frightening" decline in numbers this summer. The numbers of the small tortoiseshell - one of Britain's most recognisable and widespread - ...