First time raising poultry. I made it through ducklings niacin deficiency but now my rooster (Black Australorp) is mounting my ducks. The ducks are running from him and when I went out to shut the coop up tonight the ducks were sleeping in the run. We have predators so I put them all in the coop at night. I also believe one of the Polish chicks I got is also a rooster he does not appear to be dominant. Any way to keep the rooster from mounting the ducks? Or should I rehome if possible? Thanks for the help.