Thanks for the thoughts.
I not sure how anything else could have gotten into the coop. The outside run is made out of dog kennel panels bolted to the coop with a chicken wire roof. Plus we have seen the chickens pecking on each other recently so we are suspecting that they took it too far...
Came out today to find one of our chickens had been killed by the others. She was laying outside with all the feathers missing from her neck and blood spread around the coop. I have no idea why this would have happened so I am hoping someone else has an idea.
Some Background: We live in...