How To Prevent Heron Theft
The large birds you know as herons are gorgeous, elegant birds which have one major design flow: they enjoy eating Koi, and where better then to hunt Koi then an unwatched pond or garden? Herons are two or three feet tall, with a very large wingspan and they may even seem to be extremely graceful till you realize that the beautiful sight could have possible been a koi thief trying to make off with your fish.

If you noticed that your Koi are absent, odds are a Heron is to blame, in fact you may even see huge gapping holes in the sides of your Koi. That occurs if a Heron attempts to capture one your koi, though does not get the best hold on it. Others will notice their Koi laying in the yard far away from your pond, which is a result of the Heron letting go of the Koi after removing it from the pond. Though you can’t do anything to totally halt this from happening, you may do a couple things to discourage Herons from consuming your pride stock of fish.
Some pond owners place a fake plastic Heron within their garden that is intended to deter another Heron from landing there and does work at times during the year, till mating season comes. Herons would be much more prone to make land near your plastic Heron when they’re seeking a mate. Several other sorts of equipment tries to sway Herons by causing them discomfort, but that only works until the Heron gets use to it, or simply finds a way to circumvent it. The one way to defend the fish is by watching out for them, because although a few simple things may not prevent Heron from visiting your pond, they will highly reduce their chances.
1) Constantly alter your routine as Herons are intelligent and know exactly when you’ll normally be around. Going to the pond frequently at various periods throughout the day would highly raise the odds that you’ll catch it in the act. If you’re not able to change your schedule, then you might consider asking others to come to the pond as well. Older, trusted children within the neighborhood may delight in visiting your pond at various times of the day. Allowing them to come anytime they wish would permit other people to drop by when you cannot.
2) If you catch a Heron in the act, emit as much noise and frighten the Heron as much as you physically can: shout, yell, throw objects, or anything that you believe will frighten that Heron. The more scared the Heron is, the lower chance he is to return anytime soon.
3) Create a secluded area in your pond for your fish as keepers have taken note that once a Heron attacks a pond, it may seem that the Heron has gotten all of the Koi, but then they see that the Koi start emerging from strange hiding places once the scare has passed.
If you willfully create an are for the Koi to hide in the event of an attack, you greatly lower the volume of fish which a Heron will leave with. Do not worry over the fish concealing themselves from you, because they should know and trust that you will not hurt (or devour) them.
4) Don’t restock your pond right away in the event of a Heron attack because holding back to restock might send that Heron searching for new feeding places.