A couple on our Viking Sea cruise last year did a private tour just to the Falconry Centre. They spent half a day there and had much more interaction with the birds than we had because if was a much longer tour. I wish I could help you out further and had the information. If it's something you're really interested in, keep searching.
If you want to do both the Falconry Centre and Krka Falls, I would suggest that when you are climbing back up Krka Falls, you ascend the same way you descended. @TayanaLorna the idea of climbing back up via the way you descended is something I should have expressed in our emails.😊