I have a sweet little Americauna who injured her leg and is now limping (not broken, sprained as per vet). I separated her from the others to allow her time to heal. She sleeps overnight in a dog crate. The other three still see her during the day and free range around the outside of the chicken tractor where I keep her. She is still limping a little but is much better. I have let her out to free range with the others a few times. Sometimes they are fine together, and and sometimes the other three gang up on her and peck her unmercifully. She's very small and has always been at the bottom of the pecking order and mostly avoids them because they would occasionally chase her, but now they are viscously attacking. How do I resolve this other than keeping them separated forever? Will it ever get better, or is this it? The other three are Barred Rocks (2) and an Australorp. They are all 2 1/2 years old.