Lesser Scaup

Cornell’s All About Birds

Lake Elkhorn
March 20, 2013
Photo by Annette Allor

Lake Elkhorn
January 30, 2026
Photo by Lauren Crocker

Centennial Park
January 6, 2013
Photo by Kurt Schwarz

Centennial Park
March 31, 2003
Photo by Howard Patterson

While not necessary for common species, it is good to get into the habit of including photographs and recordings/spectrographs so that you do it for uncommon species that require more documentation.