A record number of one of the UK's rarest butterflies has been found at a nature site. More than double the number of silk ...

The Fort Indiantown Gap military base in Lebanon County is home to the world's only surviving population of the eastern regal fritillary, a large butterfly that the U.S. Fish and Wildlife Service ...

The Glanville fritillary has long been an internationally known model species for ecology and evolutionary biology, whose population biology has been studied on the Aland Islands for more than 20 ...

The only place to find the regal fritillary butterfly in the East Coast is at Fort Indiantown Gap. It's a rare treat to spot what the military training site compares to a monarch butterfly dipped in ...

In a year when a “butterfly emergency” has been declared, one species in Northern Ireland is bucking the trend. The marsh fritillary made its presence felt in autumn, when the caterpillars spin ...

Whether you live in or are visiting the southern U.S., keep your eyes peeled for gorgeous a Gulf fritillary butterfly. And if ...

The regal fritillary butterfly has largely disappeared from the East Coast, save for a surprising refuge on a military base in Pennsylvania. A few days each summer, hundreds descend for a tour. About ...

Passion is a curious concept. It combines intensity and desire, in its purest sense, to create an obsessive need. There is, figuratively and literally, a fine and not always obvious line between ...

The rare regal fritillary butterflies have disappeared from nearly everywhere in the eastern U.S., as native grasslands have been destroyed and converted to other human uses. The once common species, ...

It's relatively large and quite eye-catching, but it's been many years since anyone has spotted an Australian fritillary butterfly. In 2001, there was a confirmed sighting, and in 2015 one was ...