Beavers have been found living wild in the Avon catchment, as the long- vanished mammal continues its comeback to England. Avon Wildlife Trust said monitoring had revealed three generations of beavers in the catchment, in the Bristol and Bath area, including three babies, or kits, born this year. It marks the return of the species to the area after 400 years, and showed they were expanding their range naturally, the wildlife charity said.