I have three ducks. 2 rouens, 1 male, 1 female. Quaxwell and Ducklett, and a buff orpington female named daisy. About 3 days ago, I noticed ducklett was bleeding from her wing. Thanks to this website, I found out it was her blood feather. It was not bad, just a little blood, so I took her out, cleaned her up and a few hours later tried to put her back with the other two, my male chased her and bit her a couple times, so I took him out, and the other female less aggressive but still bit at her feathers, so I removed ducklett again. Yesterday, again I tried to put her back. It was a bad idea. The male seemed aggressive and chasing her, the other female was crying and then he bit my ducklett again, this time bad. The feathers were bleeding and it took me a minute to finally get it to stop. Then the male was going for the non injured female. He specifically was only biting her blood feathers and they aren't injured at all. Can I make hum stop? Why is he specifically going after the blood feathers? Thanks for any insight. Also, they are almost 6 weeks old and have been together since birth.