Sadly, it seems very unlikely that we will hear from Highland Cuckoo MacSporran again.

We are unlikely to ever know what happened to him as there are no clues in the data we received from his tag as to his fate. There were no signs of any issues with his tag until transmissions suddenly stopped mid-transmission cycle. This could be due to a sudden event such as predation, or it could be due to tag failure. 

There is a very slim chance of course that he is re-caught alive or that his ring or tags are recovered.