Unfortunately our grass and sod level dropped over the winter rains, exposing about an inch of pale blue foam on the inside of our retaining wall. I just discovered that our white cochin, Blanche, has been enjoying it and pecking away at (read: ingesting) the foam for about 10 feet!! I tried to scare her off, to no end. She went right back. She seems perfectly healthy, alert and happy otherwise. We will put down new sod soon, which should bury the foam, but should I be worried about the toxicity of future eggs from her? She is ~20 weeks old and has not begun laying yet. I separated the chickens from that part of the yard once I discovered Blanche's bad behavior. Thanks guys.