David Woodfall / Purple emperor butterfly (Apatura iris) male basking on ground. Knepp Rewildling Estate, Sussex, England, UK.

David Woodfall / Purple emperor butterfly (Apatura iris) male on field maple hedge. Knepp Rewildling Estate, Sussex, England, UK.

David Woodfall / Landscape of Knepp Rewildling Estate, West Sussex,England, UK. June.

David Woodfall / Long legged Flies (Dolidopodidae spp) on water in footprint of Longhorn Cattle, Knepp Rewildling Estate, West Sussex,England, UK.

David Woodfall / Long legged Flies (Dolidopodidae spp) on water in footprint of Longhorn Cattle, Knepp Rewildling Estate, West Sussex,England, UK.

David Woodfall / Purple emperor butterfly (Apatura iris) female with closed wings. Knepp Rewildling Estate, West Sussex, England, UK.

Sandra Bartocha / Dead pine trees and reed mace at water's edge with European beech (Fagus sylvatica) woodland behind. This area has been allowed to flood during rewilding scheme creating a bog, and also killing off th...