This dataset includes information on Ruddy Duck counts for the first four months of the Ruddy Duck Regional Control Trials. Details of culling operations during this period were recorded in Control Operations and Counts database. Details of counts between mid-July 1999 and the end if the Regional Control Trials were also recorded in the Control Operations and Counts database. Codes for other species present are those used by the British Trust for Ornithology and others. Attribution statement: ©Crown Copyright, APHA 2016
