Hi everyone, I have one 27 day old chick and the parents were both doing perfect, then yesterday I noticed the Dad was fluffed up and looking ill. He hasn't been eating and he's been sitting in the nest box with baby for comfort. I thought maybe it was exhaustion from raising a chick, but now I can see him regurgitating like when they're ill. So I'm thinking either yeast infection or protozoas. I have medication at home already but can I not give it to him when he's still feeding the chick? Will it kill the chick? Please help asap.