We don't have those around here. And the way I find out one of my hens has fatty liver disease is I find them dead where they were standing. They've never shown any signs of illness prior to dropping dead in their tracks. I did necropsies on 3 of them. At this point I just assume with the others that just drop.I take the hens to an avian specialist vet when they get sick, so they're on the pellets he prescribed with additional supplements.