One of the girlies was looking a little off this week, looking weak, not foraging, sitting around so we dragged her inside and discovered she was rail thin. (She's also molting so we didn't notice the weight loss, just thought it was feather loss). She drank water like crazy but only picked at her food, and she had diarrhea pretty badly. She got unlimited supplies of crumbles, scratch, nyger seed and suet cake. As well as oyster and grit. Today she finally started eating purposefully. Her first solid "business" appears to be full of blue foam insulation. I found the chunk I think she'd gotten into and the amount missing is pretty spectacular. I'm worried that she might have blocked herself to the point that it's a health concern. Her crop isn't hard, has anyone's chicken eaten a large amount of foam and recovered? I'm grateful to hear that so far no one has a story of death-by-styrofoam. My big plans are to keep an eye on her and do my best to fatten her up.