Gadwall
species of bird
The gadwall (Mareca strepera) is a common and widespread dabbling duck in the family Anatidae.
Taxonomy
The gadwall was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae. DNA studies have shown that it is a sister species with the falcated duck; the two are closely related to the three species of wigeons, and all of them have been assigned to the genus Mareca. There are two subspecies:
Mareca strepera strepera (formerly Anas strepera strepera), the common gadwall, described by Linnaeus, is the nominate subspecies.
†M. s. couesi (formerly A. s. couesi), Coues's gadwall, extinct c. 1874, was formerly found only on Teraina, a coral atoll in the Pacific Ocean.
The specific name strepera is Late Latin for "noisy". The etymology of the word gadwall is not known, but the name has been in use since 1666.
The public source identifies “Gadwall” as species of bird. This brief keeps that definition visible, then builds a research path around Gadwall, species and bird.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Gadwall”, the useful work is to connect “species of bird” to the records capable of establishing context and consequence.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Jul 8, 2026. The linked authority identifier is Q28106966. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1758, 1874 and 1666.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Gadwall” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.