Our 3-month old hen (most likely an Ameracauna mix) has had very runny poop for about a week and a half. (No blood). She is still eating and doesn't seem to be too lethargic, but I am wondering what might cause this and how I should treat it. Is it cause for concern? There are two other hens in the coop with her. We are feeding her a commerical crumble mix of 16% protein, along with other "treats" like greens, fruit and other food scraps. I am a total novice with chickens and just joined this forum, so any information is appreciated!