One of my New hens haven't had her but an hour before this happened. So she was out in the yard and a dog ran up and tried to get a hold of her. She is a cochin bantam and I got there in time to stop the dog. Well she plucke a lot of feathers from her and scuffed her up a bit but she is doing fine now just a little grumpy. Will she be fine and how long will it take for her feathers to grow back?