If you need more

Patuxent Bird Identification InfoCenter
http://www.mbr-pwrc.usgs.gov/id/framlst/framlst.html

Ducks at a Distance
A Waterfowl Identification Guide

http://www.npwrc.usgs.gov/resource/t...t/duckdist.htm

Species, Age and Sex Identification of Ducks Using Wing Plumage
http://www.npwrc.usgs.gov/resource/t...m/duckplum.htm





Arizona Waterfowl see Ducks, Geese flying or landing drop me a line
Have decoys will Travel