With our incredibly low temps here in Wisconsin one of my 3 chickens got a frost bitten foot which also bled. I separated her from the other 2 chicks and created a hospital setup for her in a large dog crate in a different area. I cared for her foot as recommended by some of you. I used blu-kote on her foot which worked well. This morning I put her back with the other 2 chicks and they immediately attacked her purple foot. She fled to a safe area and there she remains. Any thoughts on how to safely reintegrate her. Thanks for suggestions.