The red-billed teal is 43–48 centimetres (17–19 in) long and has a blackish cap and nape, contrasting pale face, and bright red bill. The body plumage is a dull dark brown scalloped with white. Flight reveals that the secondary flight feathers are buff with a black stripe across them. The sexes are similar, but juveniles are duller than adults. This is a quiet species, but the displaying male has a whzzt call, whereas the female has a soft Mallard-like quack. Learn more about Red-Billed Teal