Pocket Waterfowl ID Guide
The LeMaster Method, by Richard LeMaster
This comprehensive, full-color guide introduces new ways to identify waterfowl. It keys ducks and geese, male and female, by bill, head, feet, wings and in flight. There is a nice section featuring both hens and drakes at a distance. This is easily the best pocket waterfowl guide available. 7” X 4½”.