Injured Red-Tailed Hawk?

I drove through Wildwood Cemetery tonight and from a distance, noticed the profile of a large bird on top of a gravestone.  I drove down that road and stopped right next to it.  It was the same juvenile Red-Tailed Hawk that I had seen a few days ago, low in a tree.  Look at its legs in the two photos.  In one, it looks ok and in the other, it looks injured.

I hope it is ok, but it is certainly not acting like a healthy bird.  It did not fly away.  It is too low to the ground.  Birds were not mobbing it, almost as though they knew it was not a threat.  Although this is a beautiful bird to see up close, I'd prefer a view of a healthy bird from a distance.