Bob Miller made Study Bills for years they show the head, eyes and feature aids in exact placement of eyes and distance between the eyes. These are $25.00 each limited supply
Black Duck Drake
Blue Winged Teal Drake
Blue Winged Teal Drake Open mouth
Bufflehead hen
Hooded Merganser Hen
Ruddy Duck Hen
Shoveler Hen
Spoonbill Drake
Spoonbill hen
Blue Jay
Cedar Waxwing
Dove
Golden Eagle
Great Blue Heron
Grebe
Kestrel
Loon
Prairie Falcon
Redwinged Black Bird
Robin
Woodpecker Pileated