unknown injury

Sorry that the quality of these pictures is not great. I have just found this bird on my porch, he seemed a little weak and I was able to catch him with my hands. His feet are black and swollen, but I have examined them and I cannot see any string or similar. He has either managed to get the...

So here is the story... Walking to the post office I cut out behind my building and walk the side streets behind a parking garage. As I pass by the entrance/exit to the garage I see an adult pigeon sitting there on the ground kind of puffed up. I am worried that the pigeon doesn't seem to try...