Great news for butterfly enthusiasts: record numbers of the once-endangered heath fritillary butterfly have been spotted at Pound Wood Nature Reserve in Essex. Conservation efforts have been ...

The Uncompahgre fritillary butterfly is federally listed as endangered. It is found only in Colorado, near the headwaters of the Rio Grande, where it lives at more than 12,000 feet in elevation.

Another kind of butterfly, El Segundo Blue, lives only on the sand at the end of the runway at Los Angeles International Airport. Still another, the Uncompahgre Fritillary, is found only in small ...

The U.S. has more than 1300 endangered or threatened species, from South Dakota's black-footed ferret to Colorado's Uncompahgre fritillary butterfly to the blue whales that live off the coast of ...

It's not easy to see the orange and black spotted regal fritillary butterfly if you live in the Eastern U.S. It used to be common across much of the country, and is still found in the Midwest.

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 ...

A marsh fritillary butterfly by Mike Turtle: Sheep tend to over graze the land, making the grass too short and eating wild flowers but cattle and horses play a vital role in keeping the fields ...

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 ...

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An orange and black species of butterfly native to the Kansas prairies is declining in population, and federal wildlife officials want to protect it. The western regal fritillary butterfly ...