We just got back from a movie (1 am) and came to find our hens not only awake but making noise and wandering around their run - this has NEVER happened. They are always in a row walking up their ramp into their coop at dusk and no matter how much noise we make bringing in the garbage, etc, they don't wake up and come out. BUt tonight they are wandering around. What could the reason be? We are thinking that perhaps an animal came by and scared them but could a predator come and not harm them? It's too dark to see if any one of them are hurt, and other than their uncharacteristic noise-making and wandering at night, they seem ok. Any experienced speculations?