My Polish hens leg healed just fine with no intervention. It took a couple of weeks and I put a low roosting bar in for her bc she couldn't get up on the high ones
One of my chicks arrived with a bum leg but after a few weeks it healed otself and now you can't even tell it was ever injured.
Now about about 2 week ago I ran one of my Polish hens over with the coop door and she's hopping around. But she's getting up on the roosts (not the high one) and...