I spent the last day of the dry season walking Bayocean Spit on Tillamook Bay (Birding Oregon p. 128). On a day trip from Portland, it is tempting to try to cover all the hotspots around the bay, but spending the day exploring Bayocean Spit provides access to all the major habitats of the area along with a nice hike.
Although the shorebird migration is winding down, there were still some birds on the bay side of the spit. Black-bellied Plovers were the most obvious and vocal, joined by Western Sandpipers, Short-billed Dowitchers, a Semipalmated Plover, and the first Dunlin of the season.
The ocean side of Bayocean Spit usually has far fewer birds than the bay side, but it is a nice stretch of secluded beach.