I bought three chicks from our local Atwoods and I have one chick who just won't get solid poop! I have had them for about three weeks now and all three are healthy growing girls who eat and drink plenty and even chase each other around after bugs and such. Still, there is one runny pooper in the bunch and I can't figure out why. I put some apple cider vinegar in their water but that only made it half solid for a little while. She seems healthy, and other than it just stinking to high heaven, I can't tell anything is unusual. I also can't figure out why the other two don't have the runs. Can someone help me? P.s. the people at Atwoods didn't know what breed they were. they have just started to get reddish copper feathers in around their heads and breasts. the rest of them is solid black with white on the belly. cuckoo maran maybe?