Hello! I'm needing some help with understanding some new behavior we have seen in 2 of our male khaki campbells. We only have 3 ducks, all khaki campbell and all males. One is about 6 months older than the other two, but have all grown up together other than that first 6 months, they are not yet a year old. Recently, two of the ducks are constantly fighting one another. They go back and forth as to who appears to be the dominant one (which one is initiating the fight). The 3rd male always remains neutral. Is this normal? How do I stop them from fighting? I'm worried they are going to hurt each other. Thanks for any help and/or advice. Help!