I have 5 ducks, 4 males 1 female who just recently started laying. They free range and have access to a pond during the day and are put up in a fairly decent size pen at night. This morning i found 2 of the males dead. There was no size of entrance into the pen. Both of them had wounds on their neck. I am aware that my male/female ratio is off. I know nothing about ducks and did not have time to properly prepare for them. I received them unexpectedly. I am ASSUMING that the larger duck (pekin) killed the other two. I am now wondering what to do. I have 3 left, the very large male pekin, a male rouen, and the female. Will the males kill each other or kill the female? Just looking for answers. They were all raised together from ducklings , no one was introduced later. Thanks so much!