Jackson Bottom Wetlands Preserve 

Jackson Bottom Wetlands Preserve in Hillsboro, Oregon, United States, is a 635-acre (257 ha) wetlands area along the Tualatin River in Washington County, Oregon. Located on the south end of the city along Highway 219, this lowland area is a designated Important Bird Area and hosts such birds as buffleheads, dusky Canada geese, and tundra swans