I received mixed Batmans hatched on 9/25 from ideal poultry. All of them but this one have been doing good. This one has always been weak and we’ve always felt like they might not make it. But so far it has been hanging in there. The only thing I have noticed is it has pasty butt and his anus pulsates constantly. I just noticed that when he went poo it’s squirted out running but no blood. What are some things I can try or do ? I’m attaching some pics..