True, but why only take 3 and leave the rest unharmed? Plus, it would hard for a predator yo pull the ducklings through those bars without any signs wouldn’t it?
Wouldn’t they take all of them if they thought they were saving them though?
I would put up some posters saying you are missing them. Maybe if it was a mistake, the person will see the posters and realize they shouldn’t have taken them? I would also put somewhere on the posters that you found...