Despite their name, Brazilian Teals are native not only to Brazil but to most of eastern South America from Colombia/eastern Peru to northern Argentina.
The male Brazilian Teal has a red beak, white cheeks and an extended metallic teal-blue-green wing speculum.
Beak of male turning to red.
The female Brazilian Teal has a black beak.
She has a white spot at base of bill, white eyebrow and chin.
The male has a red bill and the female a black bill with white spot at base and white eyebrow.
Above are the Greater Brazilian Teal (A. b. ipecutiri) which is native to
southern Brazil, northern Argentina and Paraguay, south of the range of the nominate/Lesser subspecies.