At Alton Baker Park in Eugene you can see HUNDREDS of passing ducks, geese, and various other water-foul floating around and quacking at you.  There are some great trails to walk around and a few nice benches to check out the sunset from mini islands in the middle of the pond.  

In this picture I am running accross the foot platforms allowing you to get out to the island, yet the twist of the sunset and the reflection of the water makes me look as cool as Jesus running on water!