Our buff orpington seems to have something wrong but we don't know what. She's just standing in the run while the 2 other girls are happily pecking and scratching all around her. We let her out of the run for some free range time in the back yard this afternoon and noticed that she didn't follow around with the others as usual. When it was time to return her to the run she didn't try and get away like she always does but instead just stood there. Is there something we should do before closing her in the coop for the night or just wait and watch. Any suggestions? Thanks!