I love chickens, have own multiple but lately it seems like my luck with animals is running low. Every time life seems good something goes wrong. I started with six chickens, one passed away from a bum infection, I noticed she was sleeping on the floor but I didn’t think anything of it since she was acting fine that morning and still talking(her normal behavior), not to long after she died and 2 more hens came down with this bum infection where they were bleeding from their butts, I got it fixed and they were perfectly fine... so I thought. Today everything was fine, I didn’t see anything wrong with anyone’s bottom and I let them free roam( I do this for about 30mins to a hour) and they go back in their coop on their own I just shut the cage. I went outside to shut the cage and it was weird, they were all sleeping highup, some were on the trash can and two were on their tire nobody was inside the house. I did an inspection and didnt see any creatures so I did a head count and found one dead. There was no blood, beside her bum infection had come back but that couldn’t have been it since she survived with the infection for a week long of course it was being treated during that week but I doubt it’s return in one day was the cause of this. Her neck was wet but there was no blood so I have no idea what happened!! I don’t know if it was the infection because if it was why were the other chickens not sleeping in the house or even by it, when the other one died from an bum infection the others were acting pretty normal I’m thinking it was a predator but why not take the body with them and why wasn’t it any blood?