It seems Batty has been bat-napped and is no longer in circulation I did ask the current holder nicely to put him back into a cache if he is not going to continue caching, but got no response
Such a shame, young Sharky had enjoyed watching his travels and had hoped he'd come back home one day, as young Penguin's Poof! TB did just last week.
Unfortunately, the other TB bat he was chasing now also appears to be out of circulation, so this mission is over. Let's just hope he is set free again one day.