Editing Gadwall (section)

==Taxonomy==
The gadwall was first described by [[Carl Linnaeus]] in his landmark 1758 [[10th edition of Systema Naturae|10th edition of ''Systema Naturae'']].<ref name=Linnaeus/> [[DNA]] studies have shown that it is a [[Sister group|sister species]] with the [[falcated duck]]; the two are closely related to the three species of [[wigeon]]s, and all of them have been assigned to the genus ''[[Mareca]]''.<ref name=Johnson/><ref name=ioc>{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | year=2017 | title=Screamers, ducks, geese & swans | work=World Bird List Version 7.3 | url=http://www.worldbirdnames.org/bow/waterfowl/ | publisher=International Ornithologists' Union | access-date=23 July 2017}}</ref> There are two subspecies:<ref name=ITIS/>
* ''M. s. strepera'', the '''common gadwall''', described by Linnaeus, is the nominate subspecies.
* {{dagger}}''M. s. couesi'', [[Coues's gadwall]], [[extinct]] {{circa}} 1874, was formerly found only on [[Teraina]], a coral atoll in the Pacific Ocean.<ref name=Hume/>

The specific name ''strepera'' is Late Latin for "noisy".<ref name= job90>{{cite book | last= Jobling | first= James A | year= 2010| title= The Helm Dictionary of Scientific Bird Names | url= https://archive.org/details/helmdictionarysc00jobl_997 | url-access= limited | publisher = Christopher Helm | location = London | isbn = 978-1-4081-2501-4 |pages = [https://archive.org/details/helmdictionarysc00jobl_997/page/n46 46], 367}}</ref> The [[etymology]] of the word ''gadwall'' is not known, but the name has been in use since 1666.<ref name=merriam-webster/>