The females are more elusive and spend much of their time resting or flying low to the ground looking for suitable egg-laying sites.
The Pearl Bordered Fritillary is distinguishable by two large silver 'pearls' and row of seven outer 'pearls' on the underside hind wing, with red chevron markings around the outer pearls and a small central spot on the hind wing. It flies close to the ground, stopping regularly to feed on spring flowers.
Other species that thrive on the Down are grizzled and dingy skippers, marbled whites, dark green fritillaries and members of blue family, including holly, common and small blue.
Carried out by our area ranger, butterfly surveys are ongoing throughout summer, to keep track of these rare species and help inform future conservation work. These are carried out across the whole estate by both staff and volunteers.