Birds of the Willamette Valley regionHarry Nehls, Tom Aversa, Hal Opperman · First published 2004Open the Tome
Familiar birds of the Northwest covering birds commonly found in Oregon, Washington, Idaho, northern California, and western CanadaHarry B. Nehls · First published 1981Open the Tome
Familiar birds of Northwest shores and waters, covering birds found west of the Cascade Mountains in northern California, Oregon, Washington, and in southwestern British ColumbiaHarry B. Nehls · First published 1975Open the Tome
