Birds of the Pacific Northwest : a photographic guide /

by Aversa, Tom, Aversa, Tom, Aversa, Tom, Aversa, Tom, Cannings, Richard J (Richard James), Cannings, Richard J (Richard James), Cannings, Richard J (Richard James), Opperman, Hal N., Opperman, Hal, Opperman, Hal
Published 2016

Birds of British Columbia and the Pacific Northwest : a complete guide /

by Cannings, Richard J (Richard James), Aversa, Tom, Opperman, Hal
Published 2020

Birds of the Pacific Northwest : a photographic guide /

by Aversa, Tom, Cannings, Richard J (Richard James), Opperman, Hal
Published 2020

Birds of the Puget Sound Region : coast to Cascades /

by Paulson, Dennis, 1937-, Aversa, Tom, Morse, Robert, 1936-, Opperman, Hal
Published 2016

Birds of southwestern British Columbia /

by Cannings, Richard J (Richard James)
Published 2005

Birds of the Puget Sound Region /

by Morse, Robert, 1936-
Published 2003