Original sentence: The most recent statement of the British Birds Rarities Committee's role is given in Bradshaw, Harvey and Steele (2004): "BBRC aims to maintain an accurate database of the occurrence of rare taxa in Britain, in order to enable individuals or organisations to assess the current status of, and any changes in, the patterns of occurrence and distribution of these taxa in Britain
Edited sentence: BBRC aims to maintain an accurate database of the occurrence of rare taxa in Britain, in order to enable individuals or organisations to assess the current status of, and any changes in, the patterns of occurrence and distribution of these taxa in Britain.The most recent statement of the British Birds Rarities Committee's role is given in Bradshaw, Harvey and Steele (2004):