Found 2 fresh poops in the pen this am - grass and grain are easily identifiable and possibly a tape worm segment. Inside the coop, there were 2 poos which looked like they had been 'extruded' - about 3" long, made of undigested grass. There is a bowl of grit inside the coop, and one outside; as well as oyster shell, and most days ground up egg shells. Girls are locked into covered pen for past 2 months due to hawks. So I've started cutting grass/clover into 1 - 1.5" pieces and tossing into pen for the past week. Two girls have poo on the feathers and there are some loose poos around. So I've been putting a tonic with garlic, nettles and burdock into their water. And powdered probiotic on food. I've been sidelined with a sprained ankle for nearly a month, and had hubby doing chickens for the first 3 so no idea how long this has been going on.