I picked up 6 chicks today 3 weeks old...one was acting differently than rest and it has slowly gotten worse all day...I'm now seeing reddish poop...from everything I've read on forum this chick has cocci and needs antibiotics!!! Now it's 7 pm on sat on a holiday weekend and tractor supply doesn't sell any...all vets are closed!!! Does anybody have any I can buy from them?? I don't want this little one to die and I don't want the others to get sick!! Help!