that's an idea
I haven't read the rest of the thread to see if anyone has offered any other tips. If you can find a wildlife rescue place, that'd be a good bet. I dropped off a nest of robin babies (and a check donation to the cause) at our area wildlife rehab place this year that fell from a tree with no mamma in sight. Maybe it was because of the check, but they called me when my robins were released and said all had gone well!
My crow was attacked by a dog and had some small open wounds. I sprayed it only once with disinfectant.... it was not an experience I wanted to repeat, and neither did the bird. Crows and gulls both being scavengers, I would think you could feed it most anything you have handy.... he may make it, he may not, but it's worth a shot if you have a soft spot for the critter and a way to make a fence like my horse stall setup that offers some protection and also a way to escape when he's better.