Editing Duck (section)

==Distribution and habitat==
{{See also|List of Anseriformes by population}}
[[File:Last day in Ushuaia, Argentina.Flying Steamer-Ducks (Tachyeres patachonicus) in various artistic settings.Harbour silhouettes. (25921897721).jpg|thumb|[[Flying steamer ducks]] in [[Ushuaia]], Argentina]]
Ducks have a [[cosmopolitan distribution]], and are found on every continent except Antarctica.{{sfn|Carboneras|1992|p=536}} Several species manage to live on subantarctic islands, including [[South Georgia and the South Sandwich Islands|South Georgia]] and the [[Auckland Islands]].{{sfn|Shirihai|2008|pp=239, 245}} Ducks have reached a number of isolated oceanic islands, including the [[Hawaiian Islands]], [[Micronesia]] and the [[Galápagos Islands]], where they are often {{birdgloss|vagrants}} and less often {{birdgloss|residents}}.{{sfn|Pratt|Bruner|Berrett|1987|pp=98-107}}{{sfn|Fitter|Fitter|Hosking|2000|pp=52–3}} A handful are [[endemic]] to such far-flung islands.{{sfn|Pratt|Bruner|Berrett|1987|pp=98-107}}

[[File:Female Mallard at Menacuddle Well.jpg|alt=A brown duck in a fast-flowing stream|thumb|Female mallard in [[Cornwall]], England]]
Some duck species, mainly those breeding in the temperate and Arctic Northern Hemisphere, are migratory; those in the tropics are generally not. Some ducks, particularly in Australia where rainfall is erratic, are nomadic, seeking out the temporary lakes and pools that form after localised heavy rain.<ref>{{Cite web|url=http://www.wiresnr.org/pacificblackduck.html|archive-url=https://web.archive.org/web/20080501172752/http://www.wiresnr.org/pacificblackduck.html|url-status=usurped|archive-date=May 1, 2008|title=Pacific Black Duck|website=www.wiresnr.org|access-date=2018-04-27}}</ref>