As a land owner I would've wanted them to show me the blood trail to verify they weren't trespassing and hadn't shot it on my property. At that point I've had happily given the kid his deer, I find it very strange that people would claim a deer in this situation.
In Idaho the law states that anyone who has a wounded deer cross onto private property that they don't have permission on, then they need to contact the land owner for permission. If they can't get in contact with the land owner, then they can call the F&G and an officer will ****** them to retrieve their deer. If they do get in contact with the land owner but are denied permission, then they can contact a F&G officer and will ultimately get permission to retrieve the deer...and the land owner will be cited for waste of game. So basically as a land owner we know we need to let people retrieve game or be cited. As a hunter who hates to see meat go to waste, I actually like that Idaho does it this way.