I was in the barn in one of our boarders horses stalls cleaning the water buckets. I heard one of the chickens SCREAMING, I panicked because I never heard one in that much distress, I jumped out of the back stall door and there was a fox in the front of the barn shaking my chicken BooBoo. I though he had her wing or something, so i was SUPER scared. I ran up to it, I would do anything for my girls so i was ready to kick it or something, but luckily it dropped her and ran away. My dad game out with the dog, and he ran off after the fox, while BooBoo ran in the other way as fast as her legs could take her. I caught up with her and scooped her up, and luckily she only lost most of her back feathers, and had a few scrapes, probably from the feathers being torn off, we put anti-bacterial killers on it and brought the rest of the girls inside, they all where really scared, so they went inside the coop without a problem. BooBoo's eating fine, but my dad says that the fox was probably super hungry if it would go after a chicken in broad daylight, and with me banging around with the buckets in the barn. I am really worried that it will come back, and I don't know how long I should keep them in. I really don't want to lock them up for a week and let them out when I'm there. How long should i keep them in?