I recently purchased 4 new hens they are about six months old, they came from a very large flock of about 32 hens. They act healthy have red waddles and combs they lay everyday, but my only problem is they seem to eat constantly I know all chickens eat constantly but these girls eat alot of grain and they are not a big breed .. Their poop is not real firm and at night underneath the roost there are piles of it....I have 3 other hens that I raised from chicks and they poop is normal but the new girls have piles of it I don't see any worms in it and sometimes it is very runny. I give them yogurt they also free range a few hours during the day. When they get off their roost in the morning they run straight to the feeder and eat like their starving!!!! I've had them for about a month and the poop problem hasn't changed.