I had to remove my Wyandotte from the flock because of bumblefoot treatments. She was away from the flock for about a week. Today, when I brought her back in she promptly got into a fight with another Wyandotte hen. The 2 of them were raised together and have always gotten along. She didn't have an issue with any of the other hens. At first I thought ok, they'll bump chests a few times and be fine. Well they were pretty vicious grabbing at each others faces drawing blood several times. So of course I separated them. I put the wyandotte with bumblefoot in a pop up play pen inside the run. Any clue how long this will go on or what I can do? I never have this problem when I introduce younger chicks, they just assume the subordinate position. But I guess this hen would like a better spot within the flock. Any thoughts are appreciated. Thanks!