First off, I'm new to raising chickens, these are my first. I have 6 hens, about 7 months old, 2 RIR, 3 barred rock, and 1 buff orph. I bought them at about 2 months old from an ad on craigslist in my town. My concern is their wet poop and the clear liquid they regurgitate. I think that most of the girls, 4 or 5 of them, are showing these symptoms. They have been doing this since I've had them. The poop under their roost is mostly liquid, but one or two of them seem to produce regular solid poop. Occasionally I will notice one of the girls vomit up some clear liquid, which the other girls immediately run over and start eating. As far as I know, everything else they do is fine. But never having raised chickens before, I'm not sure if these symptoms are normal. They started laying eggs at around 5 months and seem to be producing eggs normally. From the 6 girls we get about 2-3 eggs per day. When the weather was warmer, we were getting 3-4 per day. They seem to eat and drink fine, they are currently eating layer crumble. They also eat our table scraps and free-range around the yard most every afternoon. They are in a new coop that I built. Clean wood shavings on the floor and in their nest boxes. I have a feeling they have some kind of infection or disease from the people who raised them as chicks. But with no other symptoms and decent egg production, I'm not sure. Please let me know if I should do anything or if the girls are healthy and this behavior is normal. Thank you so much.