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Mexican Duck - BirdForum Opus

Revision as of 22:43, 9 February 2023 by Deliatodd-18346 (talk | contribs) (→‎External Links: Multiple GSearches combined)
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Photo © by bobsofpa
San Pedro Riparian National Conservation Area, Arizona, USA, 6 May 2005
Anas diazi


  • Streaked brown body, darker than Mallard
  • Plain head
  • Blackish tail and tail-coverts
  • Greenish-blue speculum with narrow white edges (less distinct than in Mallard)
  • Uniformly yellowish bill

Sexes similar.


Photo © by bobsofpa
San Pedro Riparian National Conservation Area, Arizona, USA, 2 May 2010

Found in southeastern Arizona, southern New Mexico and western Texas south to central Mexico.
Still common in its range but threatened by hybridization with Mallard, which is spreading south in the USA.


This is a monotypic species1.
Formerly considered conspecific with Mallard and also sometimes considered conspecific with Mottled Duck.


From small ponds on farms and in town parks up to the largest reservoirs, and also swamps and marshes.



Diet includes insects, seed, roots, grain either whilst dabbling or on land.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/

Recommended Citation

External Links

GSearch checked for 2020 platform.1