Hello, We had two female khaki Campbell ducks. At about one year old, one of our ducks was taken by a hawk. We added a female indian runner. They get along wonderfully, and did immediately. What has changed is the aggressiveness of our original khaki Campbell, and it seems to only be with my 9 year old daughter. She charges her, pecks her, etc. Does anybody have an idea about why this is happening and how to stop it? It really upsets my little girl. Thanks so much!