We have a poodle mix that I think may be part bird dog
She likes to put baby birds on our bed as presents but she has never once gone after a duck, even when they were ducklings. They see her as a big toy and she for the most part runs away from them
I think we did to good of a job of "leave it" than we had planned. She will go out into the yard with me and when they come up to her she will go around and around me trying to get away because she doesn't want to get in trouble for sniffing their behinds again. Oddly enough she will stay away from them but will still eat their poo