The following chart lists the eye color and the suggested glass eye size in millimeters for most mature North American birds.

Dabbling Ducks

Species                Male          Female
Mallard                Brown 11      Brown 11
Black Duck             Brown 11      Brown 11
Pintail                Brown 10      Brown 10
Gadwall                Brown 11      Brown 11
Widgeon (Baldpate)     Hazel 10      Brown 10
Northern Shoveler      Yellow 10     Brown 10
Blue-Winged Teal       Brown 09      Brown 09
Cinnamon Teal          Orange 09     Brown 09
Green-Winged Teal      Hazel 09      Hazel 09
Wood Duck              Red 11        Brown 11

Diving Ducks

Species              Male          Female
Redhead              Yellow 10     Brown 10
Canvasback           Red 10        Hazel 10
Ring-Necked Duck     Yellow 10     Hazel 10
Bufflehead           Brown 10      Brown 10
All Goldeneyes       Yellow 10     Yellow 10
All Eiders           Brown 11      Brown 11

Stiff-Tailed Ducks

Species        Male         Female
Ruddy Duck     Brown 08     Brown 08

Whistling Ducks

Species                 Male         Female
All Whistling Ducks     Brown 11     Brown 11

Mergansers

Species                    Male          Female
American Merganser         Red 11        Hazel 11
Red-breasted Merganser     Red 11        Hazel 11
Hooded Merganser           Yellow 10     Hazel 10

Geese

Species                 Male         Female
Canada Goose Small      Brown 10     Brown 10
Canada Goose Medium     Brown 11     Brown 11
All Other Geese         Brown 12     Brown 12

Upland Birds

Species                        Male            Female
All Grouse                    Hazel 10        Hazel 10
All Prairie Chickens          Hazel 10        Hazel 10
All Ptarmigan                 Brown 09        Brown 09
All Quail                     Brown 08        Brown 08
Chukar Partridge              Hazel 09        Hazel 09
Grey Partridge (Hungarian)    Brown 09        Brown 09
Ring-Necked Pheasant          Pheasant 10     Pheasant 10
Wild Turkey                   Brown 12        Brown 12
Common Crow                   Brown 11        Brown 11

Shore Birds

Species            Male         Female
Sandhill Crane     Hazel 12     Hazel 12
Virginia Rail      Hazel 09     Hazel 09
Clapper Rail       Hazel 10     Hazel 10
King Rail          Hazel 10     Hazel 10
American Coot      Red 10       Red 10
Woodcock           Brown 10     Brown 10