i came to live on a canal boat,and made friends with 2 swans male and female,he hissed at me and displayed his wings at first,however,hes become a pet,he taps on my boat for food,hes very tame now with me,i feed the ducks and the swans with bread,i dont know if thats correct,he loves bread,i am infact able to stroke flockys head,only me however,he trusts me and i love him to bits,he snorts and wags his tail whats that mean,