. . . . . . . . . "Anas platyrhynchos" . . "Branta canadensis" . . "Margaret Liu. 2013. Anas platyrhynchos other species in group Branta canadensis. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/243008> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .