Okay, we have our chickens in a large coop but maybe once or twice a week I let them free range for about an hour before bed. The only thing around is grass and woods with some weeds. Anyway, I have noticed some really dark colord poo. It reminded me of tar, and I have seen some runny brown poo too. I have no idea who it's coming from. Is that a sign of something bad, did they eat something they shouldn't have? I was going to put my roo's up on Monday (in the freezer) but now I wonder if I should wait another week to make sure the poo clears up. Thanks for any advice.