I'm new to chicks and have a two week old chick who's breeder recommended an antibiotic after I showed him a video of the sick chick. The only antibiotic available in my town is for fish which the pet store said could be used for the bird. Anyone know how much to give a two week old chick? I can;t even begin to guess how much it weighs but it fills up my hand when I hold it. It's an olive egger. The anti biotic is either penicillin or amoxacillin. This probably isn't enough information but it's all I've got!