I used to have a heron that would stop by and clean my out several years ago. Netted the pond at time period, but became too much of a nuisance. Heron hasnt been around for a long time. My neighbor told me a bald eagle swooped down and stole a nice koi today. Guessing this wasn't a 1st visit. Cant win! We live in a forested area in VT with no ponds nearby. Just ranting. Any suggestions to keep the bald eagle away?