We saw two interesting birds at Saville Gardens at the weekend: the Egyptian goose and the Mandarin duck, both originally brought in as ornamental ducks for grand gardens. They have of course escaped and are described as feral. How Saville's are named is another matter, it being one of the grand gardens. They are much too pretty to be feral. Related to the shelduck, the Egyptian goose has built up quite a population in the Norfolk coast and Broads. Mandarins are seem more widely in England and Wales but in my experience they are still not common.