I have 5, 7 week old chicks. One has had runny poop from day one that for the most part hasn't changed. It's brown, some days more runny than others & some days with a more thicker constancy but still more runny than the other 4. I know drinking more due to it being hot & easing watermelon etc can affect the constancy. I'm just curious if there is something I can do to help "firm" it up a bit. She eats good, gaining weight & growing, very active, etc. I give hydro hen about once a week in a smaller dish than they normal water so they have access to both & I also do probiotics. I've googled a ton & looked at poop pictures & it doesn't look like coccidiosis poop, so I'm kind of baffled. I have been feeding medicated chick starter from day 1. Any help would be greatly appreciated.