They were all fine last night and then when I went to take them out to free range while I worked on their coop today I discovered that my little "black" roo is not well! His outward appearance is ok....however he is very uncoordinated and can not stand at all or really walk. He also does not seem to know what he is pecking at when he goes for feed.....he was jabbing aimlessly and much harder at food than the other chicks. He is still interested in food...and will drink if water is right there. Does anyone know what this might be caused by or if he will recover???? I could try to take a video if anyone thinks that will help.