I am a newbie with my Pekins. I have 2 males and 4 females 19 weeks old. All was going well until about 2 weeks ago when both my males started mating with one of my females. Now they chase her around and pull her feather out on her neck. She stays away from them as much as she can. Even when out of the pond, the one male will lower his head and chase her. Is this normal? We feel badly for her, it's like she's lost her "family", as she is only in the group when there is danger or it is getting dark and it is time to go into their house at night. Any ideas? Thanks!!