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It is a duck, called quacoztli because its head and its neck are tawny to its shoulder. It is as large as a female Peru [duck].2 Its eyes are chili-red; its breast white; its back ashen, a little yellow; its tail likewise somewhat yellow, quite small. The feathers of its under wings are mingled white and ashen; its legs ashen tending to chili-red, small, and wide. Of its down are made capes. It does not rear its young here, but also migrates. Its flesh is very savory.