Matt, I sent you an email because I thought you had logged off this site.
Please don't put the pigeon that can't walk, outside in the shed. It needs to be kept warm and given supportive care. Please run a fecal on both birds to check for worms, coccidia and bad bacteria. Personally, I would start the non-walking bird on baytril asap.
Once outside and in the shed, pigeon prefer shelves to roost on and flat perches. It's very important to make sure they are dry and protected from predators which would include rodents that can get into the shed.
There is so much more to all of it than just what I've told you and this site is a has a wealth of mostly, helpful information.
Please don't put the pigeon that can't walk, outside in the shed. It needs to be kept warm and given supportive care. Please run a fecal on both birds to check for worms, coccidia and bad bacteria. Personally, I would start the non-walking bird on baytril asap.
Once outside and in the shed, pigeon prefer shelves to roost on and flat perches. It's very important to make sure they are dry and protected from predators which would include rodents that can get into the shed.
There is so much more to all of it than just what I've told you and this site is a has a wealth of mostly, helpful information.