These diving ducks are a member of the sawbill family, named for their serrated bills, that they use to catch fish. A largely freshwater bird, they first bred in the UK in 1871. It built up numbers in Scotland and, since 1970, it has spread across northern England into Wales, reaching south-west England. Its love of salmon and trout has brought it into conflict with fishermen. This bird seen today in Titchfield Habour is a female (the male has a green head).