Any improvement is good!
I didn't mention it before because you had bigger issues. But if your rooster makes it, and I think he will..... Layer feed, if that's what you are using is too high in calcium (4%) for non laying birds including chicks, roosters, and molting hens. Also if you are letting your hens stay into old age. In the long term it could cause kidney problems or gout. Also layer is the lowest in protein and is the bare minimum to support a laying hen. My suggestion, if you don't already, is to use a starter, grower, all flock or flock raiser... and offer oyster shell on the side. All of those are higher in protein and only about 1% calcium which is safe a cross the board. And the higher protein will help the birds to grow feathers back in since that is what feathers are, protein. The non layers may sample the OS, but they will be able to avoid it instead of being over dosed. Now it's not an emergency for you to change your feed today. But if you can the next time, that would be a good idea.
Part of the problem with layer being only 16% protein (15% Wally brand) is that if you give out treats like fruits and veggies it diminishes the protein even further and can actually inhibit laying. Do you feed your egg shells back to your girls? That is safe to do and they love them.
Keep in mind, the things I state CAN happen doesn't mean they will. Even though I haven't experienced these issues, many have and said it wasn't fun. So I am sharing with you the information I have, so you can make an informed decision.
I have a mixed age and gender flock. I feed Purina Flock Raiser with 20% protein. That is the best of what we have available. But you may have more choices. And of course we all have to do what works for us, so I understand that you may not choose to switch feeds (if you're even using layer right now). The important thing is.... only around 1% calcium and preferably more than that 16% protein.
What breed is your roo? And his name? People are surprised that with 48 birds I can tell them apart and know all of their names!
Does he have enough room to stand up and turn around in there? If not, you might give him a few moment out to try out his leg.
Some of us have a hard time not doing things when we are injured. So mandatory rest might be the only way to recover and that may have just been what he needed. But you will probably be able to tell when he's ready to go back out.
Speedy recovery!
It looks like you are taking good care to make him comfortable. The only help I would have been able to offer was electrolytes, but the rooster booster probably has that covered.
