This morning I went to clean out my ducks brooder, and noticed my female rouen had some blood on the feathers of her wing. And my male rouen wouldn't stop chasing her and biting the blood. I tried to clean it off, but he kept chasing her and biting it. I put him with my chicks, they all shared one brooder up until yesterday. They are all one month old. I don't know how it happened. What can I put on it to stop bleeding and make him stop biting it. I have two females who were already upset yesterday losing their chick friends and now they are really crying for their duck buddy.