Papers in the Biological Sciences
Waterfowl of North America, Revised Edition (2010) by Paul A. Johnsgard
Date of this Version
2010
Document Type
Supplemental Material
Abstract
Excluding extralimital species and most subspecies unless these are sometimes considered full species.
Aix [through] Spatula
Comments
From Waterfowl of North America, Revised Edition (2010). Copyright © 2010 Paul A. Johnsgard.