Thrift Wood, Bicknacre, Essex. Thrift Wood is a 48 acre woodland owned by the Essex Wildlife Trust. It is accessible to the public at all times. Link to Thrift Wood at EWT website. This site has a colony of re-introduced Heath Fritillaries and the central clearing is managed to encourage their food plant, Cow Wheat.

Personal sightings:

30 May 2011. 1 Large Whites, 10 Heath Fritillaries.

14 June 2011. 4 Large Skippers, 1 Green-veined White, 1 Red Admiral, 2 Commas, 7 Heath Fritillaries.

30 June 2012. 2 Large Skippers, 1 Comma, 1 Heath Fritillary, 8 Meadow browns, 20+ Ringlets.