1. Koi Caves / Hiding Places
Since herons are territorial and often won’t encroach on a rival’s space, setting a decoy heron out by the pond can deter those unwelcome guests. Other decoys such as alligators or swans that heron’s wouldn’t want to tussle with can also be effective.
3. Fishing Line
An observation we’ve made about herons is that they usually enter the backyard ponds from the outside in. As opposed to how ducks will often fly directly into the water. Stringing a perimeter of fishing line around the pond will deter and frustrate the herons from walking in. The fishing line’s thinness and transparency don’t have the same aesthetic detraction as other physical fences or barriers do. It can also be criss-crossed over the pond for an even more robust defense.
4. Motion Activated Sprinklers
5. Guard Dogs & Nets
If you have a particularly persistent heron and other predator control methods don’t seem to be working then the last resort may be to get a dog that will chase it away whenever it lands near the pond.
Try any one or a combination of these ideas to protect your koi & goldfish from the peskiest of backyard predators. There are many more ideas out there to try or maybe even find a creative one of your own! Contact us here at AWM Water Features if you need any help or advice deterring herons or any other pond predators.