The rare pearl-bordered fritillary grows in the forest.

There are a wide variety of butterflies and moths recorded including the Pearl-bordered Fritillary.

The rare Pearl-bordered Fritillary lives in the forest.

The Small Pearl-bordered Fritillary historically was present on the site but is now extinct locally.

The wildlife include pine martens and otters, while the flora includes pearl-bordered fritillary and lily of the valley.

A colony of the Small Pearl-bordered Fritillary (Boloria selene) is found here.

The Pearl-bordered Fritillary (Boloria euphrosyne) is a butterfly of the Nymphalidae family.

They are also used as a source of nectar by the pearl-bordered fritillary (Boloria euphrosyne), one of the earliest emerging butterflies in the spring.

The site is very important for butterflies, with species present including Purple Emperor, White Admiral and Pearl-bordered Fritillary.

The Pearl-bordered Fritillary and Wood White occur as well as the uncommon White Admiral.

The presence of Marsh Violets makes the bog an ideal supportive habitat for the uncommon Small Pearl-bordered Fritillary.

Butterflies recorded include Holly Blue, Speckled Wood, Peacock and the Pearl-bordered Fritillary.

B. dia differs from the Pearl-bordered Fritillary in having a sharp angle to its hindwing (readily seen from underside when perched with wings closed).

The site contains many invertebrates including the uncommon scarlet tiger moth (Callimorpha dominula) and the nationally scarce pearl-bordered fritillary (Boloria euphrosyne).

Butterflies are attracted by the open rides and recordings including White Admiral, Pearl-bordered Fritillary and Purple Hairstreak.

Butterflies of note are the Small Pearl-bordered Fritillary, Wood White and the White Admiral or Limenitis camilla.

Recorded are the Pearl-bordered Fritillary, Silver-washed Fritillary and Comma, drawn by the open rides and glades.

Notable butterflies that may be seen are the Small Pearl-bordered Fritillary, Silver-washed Fritillary, Grizzled Skipper and White Admiral.

Pearl-bordered Fritillary, Duke of Burgundy Fritillary, Marbled White, Dingy Skipper and Grayling are just some of species that inhabit the national park.

Similar to Pearl-bordered Fritillary but has black chevrons on edge of wings, large central black dot on each one and white pearls (compared to 2 of the other species) on the underside.

It is the foodplant of the Pearl bordered fritillary, Small Pearl-bordered Fritillary, Silver-washed Fritillary and High Brown Fritillary butterfly.

Other notable species at the gorge include dormice, yellow-necked mice, slow worms and adders and the rare large blue butterfly (Maculinea arion), and small pearl-bordered fritillary (Boloria selene).

Roe Deer and Purple Hairstreak butterflies can both be seen here, as well as the extremely rare pearl-bordered fritillary and the small pearl-bordered fritillary.

Nationally scarce butterflies including the Pearl-bordered Fritillary Boloria euphrosyne and Silver-studded Blue Plebejus argus, and the nationally scarce jewel beetle Trachys troglodytes also occur.

Insects species found on the site include a dance fly (Hilara media) and a wasp (Omallus puncticollis), which are nationally rare; as well as uncommon butterflies: wood white, pearl-bordered fritillary and the white admiral.

The Pearl-bordered Fritillary (Boloria euphrosyne) is a butterfly of the Nymphalidae family.

They are also used as a source of nectar by the pearl-bordered fritillary (Boloria euphrosyne), one of the earliest emerging butterflies in the spring.

The site contains many invertebrates including the uncommon scarlet tiger moth (Callimorpha dominula) and the nationally scarce pearl-bordered fritillary (Boloria euphrosyne).

Nationally scarce butterflies including the Pearl-bordered Fritillary Boloria euphrosyne and Silver-studded Blue Plebejus argus, and the nationally scarce jewel beetle Trachys troglodytes also occur.

The former is the foodplant of the Marsh Fritillary, Euphydryas aurinia, and the Narrow-bordered Bee Hawk-moth, Hemaris tityus, while the latter is the food plant of the Pearl-bordered Fritillary, Boloria euphrosyne, and the Small Pearl-bordered Fritillary.