I have a nine pound Orpington rooster who wr discovered today was limping. He only limps when he runs, however, and he doesn't do so every time. I inspected his feet and one of the pads is swollen. It's hard and there is no scab or anything, so I'm not thinking bumblefoot. He does have a fairly high roost, however... or at least I think so. His roost is around 5'5". Probably higher, actually. Any ideas on what to do?