I have noticed that my chickens have eaten a very large quantity of Styrofoam that I used as insulation over the summer. I had noticed them eating it in the past when I had some sitting in the yard and moved it away, but they found it and pecked at it. I assume they are eating it, but can' tell for sure. However, the foam insulation I used seems to have been pecked at all winter and no trace of the little pieces remain so I'm pretty convinced they've been eating it. They are quite healthy. Coats are nice, no diseases, no deaths despite all of this styrofoam ingestion. Egg laying is excellent with no issues. Has anyone else experienced this? I can't imagine that it is good for them (or us!), but it clearly hasn't hurt them. It could get caught if there is enough of it in their digestive system, but hasn't happened. Would love to know if others have experienced this or know any more about risks. I won't let them do it anymore, obviously!