I've posted about my little Yumi over the summer because he hatched with splay leg.
and now even with all our efforts he keeps getting worse, mostly because he's a rooster so he's bigger than if he where a hen and our other rooster is always trying to mate him. like what? we either have a gay rooster or it's just Yumi's position. anyway with that and the litter substrate they have living indoor because it gets to cold outside for them. so now he's completely doing the splits, has discharge from his nose that we think our other chickens might get living with him and his vent is caked with droppings that we have to keep cleaning. we have tried many things including rubber grip mats and taking him outside in the grass but it's to cold for that now. so even though I don't believe in euthanizeing animals where going to take him to the bird vet asap and see if theirs anything that can be don and if not that we'll say goodbye forever

