I've never marked a chick
Are they eating and drinking well?
I made sure each drank some "sav a chick" electrolytes as I removed them from the shipping box & everyone seemed interested in the feed I spread on puppy pads. A little later I put the feeder inside. Only one of my pasty butts seemed sluggish & is hanging out on top of the heating pad. Everyone else seems to be lively, moving from food, water & heating pad. I have both water & electrolytes available.