There are two subspecies of Southern Pochard, one from South America
(N. e. erythrophthalma) and one from southern/eastern Africa
(N. e. brunnea).
The latter, also called the (South) African Pochard, is shown here.
The male, above, is dark brown with red eyes and a blue bill tipped with black.
The female, above, has a scaup-like white patch at the base of her bill and white cheek patches on her face.
Unsure whether the ones with brown eyes are female or
juvenile; unsure whether the ones with red eyes and "female"
plumage are female or non-breeding males -- all three prevalent at same time of year.