I have 1 drake and he is overly agressive. He tries to mate my chickens from time to time. I have come home to find a drowned chicken a few times because of him. I kept him because I wanted to hatch some of their eggs and have more KC ducks. Luckily I got the hen ducks to sit on a huge nest. 5 hatched and I separated immediately with some chicks I bought. They turned 10 weeks today, so I put them in the coop last night with the other ducks and chickens. Just too messy to keep separate any longer. I free range, so I let all of them out this morning. I watched them and all seemed well, so I left for work. I just got home and found all 5 drowned. This drake's days are numbered.