Last night I saw my hens sleeping outside the coop (I have 5). It was weird because they never do that, and I couldn't figure out why. I picked them all back up and moved them in and they would come back out and lay back down. This morning I found my RIR laying and not getting up. When I came close she got up to walk but was favoring one foot and limping pretty bad. I picked her up and didn't see anything. This afternoon I went back out to check on her and picked her up to check her out and noticed blood and saw what appeared to be a cut or wound. This is my first experience with any type of injury with a chicken. What should I do?