Hi. I have 1 rooster, 4 hens, and 2 ducks living together. They have all been living together for about 8 months. Recently my ducks have started attacking my chickens. Trying to push them into the water. And teaming up and pulling my chickens and plucking their feathers out of their heads. I dont know what to do. I cant build a sepreate home for them. And i dont want to get rid of them.