Waterfowl Commonly Seen in Practice

Green wing teal

American Green-Winged Teal

The American green-winged teal (Anas crecca) is found in tight flocks on shallow, marshy, or muddy ponds throughout the Americas. Birds breed throughout much of Canada, Alaska, and the northern United States. The winter range includes the western and southern United States as well as Mexico.

The teal is the smallest dabbling duck in the Americas. This compact, agile species typically weighs 350 g (12 oz).

  • Male teals have a reddish-brown head with an iridescent green crescent spanning from one eye, around the back of the head, to the other eye. The wings and tail are tannish-brown color, with pale yellow feathers along the side of the tail.
  • Females are tan-brown with a white chin and belly.
  • Bills are narrow and black.

During the summer months, its diet consists of aquatic inverts, tadpoles, seeds, and aquatic vegetation. During the fall, birds eat grain, grasses, seeds, and plant shoots. Ducklings feed on insects and other invertebrates and vegetation.

Image by B. Heise.


American Livestock Breeds Conservancy website. Available at: http://albc-usa.org/. Accessed on December 7, 2012.
Animal Diversity Web. Available at http://animaldiversity.ummz.umich.edu/accounts/Aix_sponsa/. Accessed December 08, 2012.

British Waterfowl Association. Available at: http://www.waterfowl.org.uk/index.html. Accessed on December 8, 2012.

Cosley zoo. White Pekin duck. Available at
http://www.cosleyzoo.org/species/white_pekin_duck.htm. Accessed on December 7, 2012.

Pedynowski D, Payne M. Captive-rearing and release criteria for mallards (Anas playtrhynchos). NWRA. Pp. 91-101.

Rogers Luebbert JA. Canada goose (Branta canadensis) rehabilitation: A natural history guide for veterinarians. Proc Assoc Avian Vet 1996. Pp. 245-251.

Sibley DA. The Sibley Guide to Birds. New York, NY; Alfred A. Knopf; 2000.

Speer BL. Pet waterfowl medicine and surgery. Annu Conf Proc MASAAV 2007. Pp. 90-92.

To cite this page: Pollock C. Waterfowl commonly seen in practice. December 19, 2012. LafeberVet Web site. Available at https://lafeber.com/vet/waterfowl-commonly-seen-in-practice/