Header image illustrating the main differences between female Blue-winged Teal and Cinnamon Teal. Head, female, en male eclipse plumage are portrayed side by side.
Bird Guides

Female Blue-winged and Cinnamon Teal Identification: Field Marks Explained

Identifying female Blue-winged Teal (Spatula discors) vs. female Cinnamon Teal (Spatula cyanoptera) can be a challenge. While breeding drakes are unmistakable, females, Blue-winged Teal juveniles vs. Cinnamon Teal, and Blue-winged eclipse males vs. Cinnamon Teal all share confusingly similar “brown duck” plumage. To master female teal identification, you need to look beyond the blue wing […]

Header image featuring representative images of the highlight topics of the article Lesser Scaup vs Greater Scaup: Key Identification Field Marks. Structural differences in the head and wing pattern are the most important field marks to separate these two species. Two columns show the head profile, flying birds of both species highlighting identification field marks.
Bird Guides

Lesser Scaup vs Greater Scaup: Key Identification Field Marks

Distinguishing Lesser Scaup (Aythya affinis) vs Greater Scaup (Aythya marila) is one of the most persistent identification challenges faced by North American birders and waterfowl enthusiasts. These nearly identical “bluebills” share similar plumage and habitats, yet subtle differences in head shape, wing pattern, bill structure, and behavior provide reliable clues in the field. This in-depth

Header image for the Common vs. Barrow’s Goldeneye Identification guide featuring whole body males and females and cut outs of the heads of each species showing specific field marks.
Bird Guides

Common vs. Barrow’s Goldeneye: Key Identification Field Marks Explained

Distinguishing Common from Barrow’s Goldeneye is a challenging waterfowl identification problem. Both species belong to the genus Bucephala, characterized by large heads and bright amber eyes, and are nearly indistinguishable at long distances on open water. In winter, mixed flocks on coastal bays and large rivers and lakes often appear as little more than white-sided

Header image for the Mississippi Ducks, Geese, and Swans ID guide, featuring two species of duck resident in the state: Northern Shoveler and Gadwall swimming and in flight.
Bird Guides

Mississippi Ducks, Geese, and Swans: A 33 Species ID Guide

Welcome to the essential guide for Identification and Natural History of the Ducks, Geese, and Swans of the State of Mississippi. This guide includes detailed species accounts, featuring multiple sex and age plumages highlighting key identification features. This resource was created to help the community to confidently learn about and identify the waterfowl found throughout

Header image for the Arkansas Ducks, Geese, and Swans ID guide, featuring two species of duck resident in the state: Ring-necked Duck and Gadwall swimming and in flight.
Bird Guides

Arkansas Ducks, Geese, and Swans: A 36 Species ID Guide

Discover the Ducks, Geese, and Swans of Arkansas with our waterfowl identification guide. This resource features detailed accounts for 36 species, covering plumage, natural history, and calls, organized by taxonomic groups. We also include a dedicated section on urban, domestic, and feral ducks to help you confidently recognize any waterfowl found in the Natural State.

Header image for the Oklahoma Ducks, Geese, and Swans ID guide, featuring two species of duck resident in the state: Wood Duck and Gadwall swimming and in flight.
Bird Guides

Oklahoma Ducks, Geese, and Swans: A 34 Species ID Guide

Discover the Ducks, Geese, and Swans of Oklahoma with our waterfowl identification guide. This resource features detailed accounts for 34 species, covering plumage, natural history, and calls, organized by taxonomic groups. We also include a dedicated section on urban, domestic, and feral ducks to help you confidently recognize any waterfowl found in the Sooner State.

Header image for the Louisiana Ducks, Geese, and Swans ID guide, featuring two species of duck resident in the state: Fulvous Whistling-Duck and American Wigeon swimming and in flight.
Bird Guides

Louisiana Ducks, Geese, and Swans: A 32 Species ID Guide

Identify Louisiana’s ducks, geese, and swans with this streamlined guide. This resource features detailed accounts for 32 species, covering plumage, natural history, and calls, organized by taxonomic groups. We also include a dedicated section on urban, domestic, and feral ducks to help you confidently recognize any waterfowl found in the Bayou State. How to use

Header image for the South Carolina Ducks, Geese, and Swans ID guide, featuring two species of ducks resident in the state: Blue-winged Teal and Gadwall swimming and in flight.
Bird Guides

South Carolina Ducks, Geese, and Swans: A 33 Species ID Guide

Welcome to the essential guide for Identification and Natural History of the Ducks, Geese, and Swans of South Carolina. This guide includes detailed species accounts, featuring multiple plumages highlighting key identification features. This resource was created to help the community to confidently learn about and identify the waterfowl found throughout the Palmetto State’s natural habitats

Header image for the Alabama Ducks, Geese, and Swans ID guide, featuring two species of ducks resident in the state: American Wigeon and Gadwall swimming and in flight.
Bird Guides

Alabama Ducks, Geese, and Swans: A 34 Species ID Guide

Welcome to the essential guide for Identification and Natural History of the Ducks, Geese, and Swans of the State of Alabama. This guide includes detailed species accounts, featuring multiple plumages highlighting key identification features. This resource was created to help the community to confidently learn about and identify the waterfowl found throughout the Heart of

Header image for the Tennessee Ducks, Geese, and Swans ID guide, featuring two species of ducks resident in the state: Mallard and Gadwall swimming and in flight.
Bird Guides

Tennessee Ducks, Geese, and Swans: A 33 Species ID Guide

Explore our comprehensive guide to the 33 species of Ducks, Geese, and Swans of the State of Tennessee. This resource features detailed species accounts, plumage guides, and waterfowl call audio organized by taxonomic group. We also include a dedicated section for urban domestic and feral ducks to help you confidently identify any bird found in