Anas acuta - The Northern Pintail in Europe. www.birdguides.com/html/vidlib/species/anas_acuta.htm
Anas aucklandica - Pateke, or the brown teal of New Zealand. nzbirds.com/Pateke.html
Anas crecca - Description of the green-winged teal from Animal Diversity Web. animaldiversity.ummz.umich.edu/accounts/anas/a._crecca$narrative.html
Anas crecca carolinensis - About the North American subspecies of green winged teal. animaldiversity.ummz.umich.edu/accounts/anas/a._crecca_carolinensis$narrative.html
Anas hottentota - Facts, photos and videos of the Hottentot teal. www.thebigzoo.com/Animals/Hottentot_Teal.asp
Anas platyrhynchos - Characteristics of the mallard duck. animaldiversity.ummz.umich.edu/accounts/anas/a._platyrhynchos$narrative.html
Anas superciliosa - Parera, the grey duck of New Zealand, and how it fares in competition with the introduced species, Anas platyrhynchos, the mallard. nzbirds.com/Parera.html
