Im so sorry for your loss. After all that effort and love you put into it, you experience the shocking trauma of what is likely a predator. Sending hugs!
Is the survivor acting totally normal, other than being lonely? Eating, drinking, and pooping normally? No visible injuries?
Im not sure which predator doesnt leave blood....its really weird. Almost as if they were dead before the heads were removed. Im happy you had help reinforcing the shed and are looking to get a new group of friends for the survivor!
Maybe someone else will know what kind of predator that might have been so that you can protect better against it. But honestly, sometimes you can do everything right and tragedy still strikes. Try to stay positive and optimistic about the next steps and new chickens!
