Hello, We lost a baby chick (3 days old) this evening and I haven't the foggiest idea why. Their brooder is perfect, their chick starter is perfect, they have water with the correct measurement of acv in it, and I've been dipping beaks every day (saw the remaining three dipping in there themselves this evening so I can stop the dipping). I looked all over the deceased chick's body and there were no signs of illness. He was fine just this afternoon. No pasty butts either, and their poop was normal for all of them (except for the first few hours as it's always green then). It's brown now, and a good consistency. They received grow gel plus b after birth because they were really looking sluggish. it perked them right up. I also used it on the chicks we had prior to these ones, and as far as I know those chicks are still perfectly healthy. It is intended for baby chicks and I know that wasn't the problem; https://www.backyardchickens.com/t/712608/grow-gel-plus-b They are Norwegian Jaerhons from a reputable source here on the forum, she loves her birds and takes excellent care of them, and monitors them all very closely...so I know this isn't something from the parents. the chick that passed away was very yellow all over his body with just a few spots of grey here and there, he was my favorite. I knew we wouldn't be able to keep him but he was still my favorite. can anyone think of anything that may have caused this (something I haven't already addressed above)? Thank you sincerely.