He's a 6 month old indian runner male and he is so mean, he killed my sweet 4 year old bantee rooster. i didn't know ducks were killers. I know it was him, i saw him picking on my rooster every day and chasing him all over, So i locked up the duck but my son let him out and didn't tell me and now the rooster is dead. I hate that duck. I think he killed another chicken too. He tries to mate with everything in the yard, chickens, ducks , geese, anything. I hate him.