I am new to chickens! I have my first flock of 4. 2 California White and 2 Black Sex Link. They are about 5 weeks old. They are currently indoors in an extra large dog kennel as it is too cold for them to be outdoors just yet. They have adequate room, things to peck on, toys to play with, and plenty of food and water at all times. My two California Whites constantly peck at the slightly (I mean there’s just a tiny bit of size difference, you can barely tell) smaller Black Sex Link until she bleeds. (Yes...pecking order has to be established, but does it always result in bleeding and no feathers?) I currently have them separated, but when placed outdoors today for a few hours....the pecking continued and got worse. Is there any way to stop this behavior? Is it normal?