Black-headed Ducks (Heteronetta atricapilla, german: Kuckucksente, french: Hétéronette à tête noire). (716k)
Here are the pictures of Black-headed Duck (Heteronetta atricapilla) with links to the pages on which they appear, links to the full sized picture, and the description of the picture with links to the entry in iNaturalist (inaturalist.org)
All pictures are © Dr. Günther Eichhorn, unless otherwise noted.
Paraguay Birds
Dr. Günther Eichhorn Travel Website
Soaring website