In mammals, the flower essence Tiger Lily reduces aggression and brings out feminine qualities. You would be able to get some in a health food store, or order it online. I put a few drops on the head of my alpha cat, Smokie and he stopped beating all the other cats up! You may also be able to find a homeopathic that you could drop into the water. I gave Smokie coffee cruda when he had hyperthyroid disease and it really helped him calm down and get some sleep. I'm a newbie in terms of chickens. Flower essences are alcolhol based and I've heard they don't do well with it. I would drop a drop on the feathers. Good Luck!