Red eyes are seen in a variety of birds, including Grebes some songbirds. Other ducks with a bright red eye are the Canvasback and Wood Duck. Note how the black bill flares near the end a bit like that of the Northern Shoveler.
Recall that the Cinnamon Teal is one of the 3 Anas species seen here that have the pale blue wing patch (cyanoptera = "blue wing"). The others are the Blue-winged Teal and the Northern Shoveler. I suppose some would add the rarely seen Garganey, as Asian species that has wandered a few times down our coast. And a world traveler could add 3 more Shoveler species to the list.
Taxonomy - note how in a diverse Order there can be a lot of subdivisions.
Order: Anseriformes - Ducks, Geese, Swans and Screamers
Family: Anatadae - Waterfowl. 150 species, excluding the Screamers (don't ask).
Subfamily: Anatinae - True Ducks, the Geese and Swans have been dropped, as well as the Whistling-Ducks, which are more closely related to the Geese.
Tribe: Anatini - The Dabbling Ducks - 50+ species, including Wood Duck, etc.
Genus: Anas - 43 species worldwide, including 12 seen in the U.S.
Species: Anas cyanoptera - Cinnamon Teal, a fairly common breeder in Marin.
Cheers, Len
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