[[Oxyura leucocephala]]

Naumann, Naturgeschichte der Vögel Mitteleuropas. 3. Aufl. Neubearb. von G. Berg et al. Hrsg. von Carl R. Hennicke. (Naumann, Natural history of the birds of central Europe, 3rd Ed. Revised by G. Berg et al.; Edited by Carl R. Hennicke.) of 1905 or his earlier works.

Source: https://commons.wikimedia.org/wiki/File:Oxyura_leucocephala_NAUMANN.jpg

The white-headed duck (Oxyura leucocephala) is a small stiff-tailed duck. This duck breeds in Spain and North Africa, with a larger population in western and central Asia.