My Indian Runner we found dead yesterday. I am so devastated and am confused as to what happened. I checked on them mid morning and they were fine. My husband found Tammy dead inside of the coop. He said that she didn't look injured and I had him check down her throat to see if she chocked and he didn't see anything. He said the only thing he could think of was her neck was laying a little weird, like she may have broke it, but I don't know how she would have. They are in a 10x10 run with a coop attached fully enclosed. I haven't noticed them being bothered by any animals, ( we are in a subdivision so it would be cats and birds for he most part). Now I am just scared that something is going to happen to the rest of them. Tammy was the sweetest of them all, and my heart is just broken. We got them as babies at the end of April, so from when we got them they are coming close to three months old. Could this be a male issue? I just notices one of the Rouens is getting the green on the head which would make him a him, correct? The other two that I am unsure about are the Kakki cambells. I tried to snap a few pictures with my phone, but they get weird when I take my phone out lol. We are new to having ducks so my questions are, are there things that can cause ducks to just die all of a sudden? And can anyone tell by my terrible pictures if my ducks are male or female? I am scared I might have more than one male. If I do, when is that an issue? Thanks so much. I am just so scared and don't want anything else bad to happen.