Veterinary questions? Ask a Vet for Answers ASAP
Good morning, I am Laura, one of the UK vets.
This is a tough one. Legally you are not supposed to take anything wild animal in unless you are a vet treating it, or a licensed wildlife rehabber.
A lot of birds carry salmonella so this is a risk for human residents in the building.
I would think if the bird has a damaged leg it will be sore. It will need painkillers and also likely antibiotics. The best thing for it would be to bring to your local vet practice who can assess and treat him. I know this might be difficult to explain to your resident but it gives Bird the best chance at getting better and being able to be free again.
You are welcome. Let me know if you have further questions, this thread should remain open for a few days.