I take it that your local park has a pond or a stream. Otherwise, ducks wouldn't be there!

In my youth, I fished a small pond in a park. I saw ducks there and caught jack pike using a spinning lure. I sold the fish to a Pole. Poles love pike and grayling. However, they're not so keen on perch.

It has ducks, geese, herons and cormorants(in season) It also has some big turtle-type-things more that a foot long. It also has some Poles slinking around the perimeters.

In my opinion the graying is the tastiest member of the salmon family- fried many a one up on the river banks. However, no grayling in our park, the water is a bit still. They like the same conditions as rainbow trout. Not that I am an expert mind.