Help for two found pigeons.

We found these two in our yard with muck all over them (mud or poop?). No bands but they couldn’t fly which is why we brought them in. We supplied some fresh water and wild bird seed we had lying around. We want to help clean them up but not sure how! TIA! -Would like to add that we don’t see pigeons in this area either which is another reason why we want to help :)