Comb duck
Comb duck ni inyoni idasanzwe, iboneka mu bishanga byo mu turere dushyuha two ku mugabane wa Amerika y'epfo mu majyepfo kugera mu karere k'umugezi wa Paraguay mu burasirazuba bwa Paraguay, mu majyepfo y'uburasirazuba bwa Berezile no mu majyaruguru y'uburasirazuba bwa Arijantine,  kandi nk'inzererezi kuri Trinidad .

Imiterere 
Ubu bwoko busanzwe ntibushidikanywaho. Ni bumwe mu bwoko bunini bw'inyoni. Uburebure bushobora kuva 56 to 76 cm (22 kugeza 30 muri), amababa ari hagati ya 116 to 145 cm (46 kugeza 57 muri) n'uburemere kuva 1.03 to 2.9 kg (2.3 kugeza 6.4 lb) .   inyoni nkuru zifite umutwe wera wuzuyeho ibibara byijimye, nijosi ryera ryera hamwe na underparts. Ibice byo hejuru ni ubururu bwirabura-umukara hejuru, hamwe nubururu nicyatsi kibisi cyane cyane kumasegonda (amababa yo hepfo).