Hi all, I have three 5 day old polish chicks in a 25 gallon brooder set up. I started with 4 but one died last night. Probably pasty butt even though i took care to check and clean her...the other 3 are fine. I only mention this because one of them has some pretty aggressive behavior and I wasn't sure if maybe illness is making him or her uncomfortable and subsequently ornery. Here's the behavior : I have 2 white crested black and 1 golden polish. The golden has been ramming and headbutting the other 2 A LOT. I would say "constantly", but he does sleep, haha. He will start at the other 2 and push them either up against the glass or into the water. When the others are sleeping, he plows them and almost looks like he is rolling them. He is literally chasing after them. Is this normal? Should I separate them? I don't really want to do that because of the socialization and heat factors...but, I am afraid he will hurt them or himself, plus it seems like they hardly get any decent rest unless he is knocked out too.