I have 20 8 week old Barred rock chicks, this morning I went to let them out of the coop and one of the chicks didn't want to move or go about its day. Brought him outside and just sat there and didn't move. My wife put him inside and started giving him cider vinegar water and just kept an eye on him. At 3 pm she started noticing bloody poop and he still is just sitting there and almost seems very sleepy. I am completely new to chickens and you should also know that they are free range chickens. Also there are 13 adult barred rocks that they live with. Everything on the internet points to Cocci but its late in a very dry year and they were started on medicated starter. Any help would be wonderful.