Look what the cat brought in!

My neighbor came frantically knocking on my door yesterday and said, "look what you cat has!" Laying on the concrete is my cat, acting like a proud king of his newest catch. I don't know what we are going to do with it now? I am trying to figure out how old it is, (I think a fledgling), and what kind of bird it is. I am pretty sure that he got a broken wing from the cat, so we will try to nurse it back to good health and let it go.