You should have handled that problem today. It will be back and you will lose some chickens. Been there, done that. Now if one gets inside the electric fence Smith & Wesson handles it. Yes, they will run off until they get use to your neighbors feeding them or the easy pickings at the garbage cans. People say they are cute, that is until they have one get in their house. Or they go out to feed the chickens in the morning and only find feathers. Then they are not so cute. Most of my life I have lived in the mountians with wild critters all around. Now at night when I sit on the deck in the winter I can see the lights of to many new houses. Just today a neighbor of 35 years had a yard sale,
selling out to move away from all the retirees from L A and San Francisco moving in.