April 27, 1948, 12-mile Swamp, Benton Co. Oregon. DBM AND THMcA. 13-1630. Blue Heron Mallard - small groups of paired birds Pintail - a few pair left Greenwinged Teal - a few small flocks left on north end. Wood Duck - several flew over and lit in among edge of ashland swamp. Turkey Vulture. Ring-necked Pheasant - 1 M at triangulation tower Virginia Rail - calling Coot - a few left Greater Yellowlegs - flock of 35. Some with a noticeably darker spring plumage. Least or Western Sandpipers - small flock flew past Gairdner's Woodpecker Violet-green Swallow Tree Swallow Cliff Swallow Raven - 7 flew over south end. Oregon Chickadee Seattle Wren Tule Wren Robin Pipit - one lone bird flew over Cassin's Vireo Lutescent Warbler Audubon's Warbler NW Redwings Purple Finch Oregon Towhee Rusty Song Sparrows.