That's awsome! I remember when my boy killed his first squirrel. Pretty much blew it off a low limb with an H&R 20 gauge, and left very little to eat, but oh well, he was so tickled that we had to stop hunting so he could go home to show his mother. He was 6 years old.
Thanks for posting, and keep us up to date on his progress! Tell him I said congratulations!