I have three Mallards (two drakes, one hen) that I got in June. We just last month added to our flock two young Welsh Harlequin hens. Intros went so smoothly and everything was totally fine for two weeks, then all of a sudden the drakes decided they hate the new hens. They chase them away from food and water, and when they were all shut in for the night a few nights ago they ripped some feathers out of one of the hens. Eating them is not an option. All my ducks are dear pets. I am really hoping there is something I can do. Can I separate the drakes, or bring them inside, and kind of break their mindset, the way you'd do with a broody hen? The Welshies will soon be much larger than the Mallards (they already are slightly larger); will this fix things? Will adding new/more ducks shake up the pecking order? (if so, how many and what sexes? I am wondering if another drake would put them in their place and then be kind to all the females?) This has been such a headache. Thank you for any and all advice.