Looking for a great place to go birding? Nisqually National Wildlife Refuge is one of the best. You can find shorebirds, songbirds, and raptors. There are about 200 species that visit the area including large flocks of migratory geese. It is a good place to look for Warblers, Terns, and Dunlins, and watch Great Blue Herons, Eagles, and Peregine Falcons.
The area is a large river delta that flows into the southern end of Puget Sound. It includes a long board walk for viewing wildlife. Nisqually National Wildlife Refuge is the largest estuary restoration project in the Pacific Northwest. Find out more at this link: http://www.fws.gov/refuge/Nisqually/
To get there you need to drive about an hour south of Seattle. It is right next to highway 5 (exit 114). Pack a lunch and plan on staying the day or at least a few hours. There are trails and lots to see.