I got 4 Mallards straight run from TSC, and they are now about 5 1/2 weeks old....just my luck, 3 are male. I also have 7 Khaki Campbells and 3 Pekins that are 3 weeks old, and separated from the Mallards. I have tried letting them mingle a few times, but the boys chase the smaller girls and bite their necks. They even chase the Pekins that are now bigger than them. I am wondering if I should put the female Mallard in with the other females? The boys are really protective of her when I go in the coop and I am afraid that they might hurt her. This is my 1st time with ducks, so please give me your honest advice on how I should handle this situation. Also, will I need to get rid of 2 of them at some point? I'd like to see if they get along and how they treat the girls before I rehome them. I want them as pets only, I am not looking to hatch, so if you think I could possibly keep all 3, let me know. Thanks!