17 shots and no hits? Time to hit the rifle range and sight that sucker in!
I believe that was 17 shots to deliberately scare rather than kill.
If so, then cormorants clearly don't mind a loud crack and a nearby splash.
I think a high-energy dog might be the best deterrent if you are not allowed any kill tags?
An 8 y.o. kid with a drone might also be a great deterrent if that is not some type of illegal harassment?
