I am a new chicken owner. (I can see why they are such lovely creatures). We let them run free in the day but at night I have a secure coop surrounded by an electric fence on our rural property in Northern Ontario. Lots of predators. A big family of Raccoons keeps getting into the compound through the electric fence and testing the locks on the coop. Fortunately, the security is strong. I set up a camera to monitor the situation. Two days ago one of the animals got a shock and ran away. I felt good. Last night I noticed one climbed the tree, turned off the power and let his buddies in! All this time I thought it was me who stupidly forgot to turn on the power before retiring.