Sighting Record for Utah

Common name:	Mexican Duck
Scientific name:	Anas diazi
Date:	11/4/2026
Time:	3:35 P.M.
Length of time observed:	About 15 minutes
Number:	1
Age:	Not positive but I believe after hatch year.
Sex:	Male
Location:	George S. and Dolores Eccles Wildlife Education Center, 1157 South Waterfowl Way 84025
County:	Davis
Latilong:	40.96172 N, 111.92974 W
Elevation:	Unkown
Distance to bird:	50-75 feet
Optical equipment:	8x42 GoSky Binoculars.
Weather:	Partly Cloudly
Light Conditions:	Well illuminated
Description: Size of bird:	Medium sized dabbling duck. Probably about 20 inches long.
(Description:) Basic Shape:	Typical Anas duck shape, Round body, tail slightly pointed up.
(Description:) Overall Pattern:	Dark reddish-brown duck, brown tail lacking any white, and yellow bill.
(Description:) Bill Type:	Broad, flat, yellow bill.
(Description:) Field Marks and Identifying Characteristics:	Saw roosting next to a mallard, initially took a closer look due to darker coloration compared to the mallard. Bird turned his head revealing a bright yellow bill indicative of a Mexican Duck or Mexican Duck x Mallard hybrid. Eventually the duck turned around exposing the tail. The tail was consistently brown lacking any white, which was also photographed. No green plumage present on head, like in the case of many hybrids. (see photos)
Song or call & method of delivery:	Not singing.
Behavior:	Roosting on packed down phragmites.
Habitat:	Wetlands at Farmington.
Similar species and how were they eliminated:	Mallard was eliminated due to lack white on the tail, and color of the bill. Mallard x Mexican Duck was eliminated also by the lacl of white on the tail, but also because the duck is male, and lacks any green plumage on head.
Previous experience with this & similar species:	This was my first encounter with a Mexican Duck.
References consulted:	Tracy Aviary Conservation Ecologists, DNR staff at nature center, and 3 experienced bird banders.
Description from:	From photo(s) taken at the time of the sighting
Observer:	Ethan Robison
Observer's address:	84103
Observer's e-mail address:	**
Other observers who independently identified this bird:	Via photo Bryant Olson identified this bird. In person, two DNR staff walked out with me today 11/13 to confirm idenrification of bird, as it has been in Farmington conistently for encroaching 2 weeks now.
Date prepared:	11/13/2026
Additional material:	Photos
Additional comments:	Bird found on four seperate occasions now, consistently in the same pond. eBird reviewer requested submitting here and gaining another opinion as they felt unable to discern hybrid from pure Mexican. Happy to email over photos, or anything else that may be helpful. [ eBird checklist]