Geoffrey Walker:
Spotted Whistling-Duck 1
Geoffrey Walker:
Spotted Whistling-Duck 2
Geoffrey Walker:
Plumed Whistling-Duck
Geoffrey Walker:
Campbell Island Flightless Teal
Geoffrey Walker:
Campbell Island Flightless Teal 2
Geoffrey Walker:
Campbell Island Flightless Teal 3
Geoffrey Walker:
Auckland Island Flightless Teal (Anas aucklandica) 2
Geoffrey Walker:
Auckland Island Flightless Teal (Anas aucklandica)