We can come up with nonlethal solutions that are better than a quick fix temporary solution that kills the animal and can put us in some serious hot water.
I have the electric fence cause it works 24-7, not because I'm afraid of hurting those cute, lovable, cuddly, endangered Otters.

I don't think Osprey would pose much of a danger to a pond provided there wasn't a flock of them, or is that a gaggle.
