For those of you saying you seriously doubt the rooster did it then why was he establishing pecking order the day before? Why all of a sudden those 3 days he began coming over one of my MALE ducks die? Why were this roosters feathers at the scene of the crime? My duck was smushed into the ground which is how roosters kill, the jump on the back and squish it and they pull out feathers from the wing. Nothing is adding up, I have learned nothing is a coincidence and why I may never know exactly what happened it all points to her rooster. I asked her to keep him away for this exact reason, and then she lies about his whereabouts. I do like the idea of a trail cam though. I don't doubt her rooster did it at all, I saw something similar with another of my chickens but I saw what happened and it was wild turkeys, they decapitated my chicken and I would have thought it'd be the turkey but her roosters feathers were intwined with my ducks. I was reading more on rooster's aggressive behavior and they crow to show dominance and the more they crow the more dominate they are, her rooster crows all the time. Also, he had 2 hens of his own but continues to bother mine. I don't want him at my house and I never did.