A study (Biol Conserv 103: 33-49) by Claire Carvell, of CEH Monks Wood, into the use made by bumblebees of a section of the Salisbury Plain Training Area, Wiltshire, has identified some of the features that bumblebees Bombus look for in grassland. This large expanse of chalk grassland has areas that are extensively grazed by sheep or cattle (mainly during the winter), land reverting from arable to grassland, unmanaged areas and disturbance from military vehicles.