Ferruginous pochard, Aythya nyroca (Anas nyroca, olive-tufted duck). Handcoloured copperplate engraving by James Sowerby from The British Miscellany, or Coloured figures of new, rare, or little known animal subjects, London, 1804.
Ferruginous pochard, Aythya nyroca (Anas nyroca, olive-tufted duck). Handcoloured copperplate engraving by James Sowerby from The British Miscellany, or Coloured figures of new, rare, or little known animal subjects, London, 1804.