Native
Introduced
Reintroduced
Vagrant
Native (uncertain presence)
Regionally extinct vagrant
Regionally extinct
Synonyms : 瘤鸭 (cn), pižmovka hřebenatá (cz), Glanzente (de), Afrikansk Knopgås (dk), Knob-billed Duck (en), Pato Crestudo (es), kyhmysorsa (fi), Oca dal pettine (it), コブガモ (jp), Knobbeleend (nl), Kamand (no), dziwonos szaroboczny (pl), Pato-de-carúncula (pt), Гребенчатая утка (ru), Knöland (se), hrebenatka škvrnitá (sl), Knobbeleend (za)
Knob-billed Duck