What a fun day to sit and relax on the ponds edge and watch the osprey nab fish and ohh wait here comes duke l think he just caught another bunny!!
lol
Ok you can tell her to get a "scare crow" sprinkler thing for the coons. Its like a security light but instead of light it turns on the sprinkler (sprinkling in bleach +brommine from the water supply into the pond)great for fish you know.
For birds you can set up a fishing line type wire system over the entire yard so birds wont want to fly throuh it.
The most effective way to have fish in a pond is to have a deep pond so the fish can hide. They arnt stupid you know. My koi know when its me or the cat and when the cat comes they go for shelter under the plants 4 feet deep. Just another ramble from sleepy. Oh the heron look alikes are sold to hunters as decoys to make ducks feel comphy and yes more herons will come (at least blue herons) the endangered kind.