Pilch Fields is an 11.1-hectare (27-acre) biological Site of Special Scientific Interest (SSSI) west of Great Horwood in Buckinghamshire.

[1][2] It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.

The varied habitats in Big Pilch include wetland, fen, scrub, a stream and ridge-and-furrow grassland.

[4] Tall hedges provide additional ecological interest.

[1] There are birds such as turtle doves, yellowhammers and reed buntings.