I pulled some 8oz cups of yogurt from the refrigerator to treat the chickens and when I went to pour it in their bowls I found that it was frozen solid (that happens with things kept in the back corner of my refrigerator). The chickens still ate it with relish. One benefit I found to having it frozen was that they didn't make such a mess and waste so much flicking drops of it off their beaks. They would just take neat bites and swallow it all. Are there any detriments to their health in giving them frozen yogurt? It didn't seem to bother them a bit.