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
The female has a white spot at base of bill, white eyebrow and chin
Size comparison with female Ringed Teal
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 lives in southern Brazil, northern Argentina and Paraguay,
south of the range of the nominate/Lesser subspecies.