Tom, my opinion is that heron decoys are a waste of money. It is not unusual for me to have 15 herons hammering on my ponds all at once in the spring & summer. They are not completely solitary predators when food is abundant. My feeling is that putting up a decoy may just be telling other herons that this is a good spot to get fish. Unfortunately, herons tend to adapt to everything legal on the market. The only thing that has been marginally effective is routinely scaring them off with a "big bang."

Mike Robinson
Keystone Hatcheries