The Irerê is a anseriforme bird in the Anatidae family. Also known as paturi, Marrecão (Rio Grande do Sul) siriri, marreca widow, marreca-Eurasian Wigeon and the region of Pombal Paraíba is known as marreca-viuvinha.
His name means the (Greek) dendros = tree; and cygna, cygnus = Concerning the swan; and (Latin) viduata, viduare, viduus = widow in mourning, mourning). ⇒ (swan fight that lands in the trees).
Probably our duck better known, both for their beauty, because if too close to urban areas and its typical corner. Is your vocalization that bears its name or Irerê paturi, very sharp and loud, remembering the sound of some whistles or the sound of rubber toys.
The white mask on the face contrasting with the black neck and lead spout makes this species unmistakable. The chest is brown and the rest of the body is finely striated in black and white. When in flight you can see the dark wings.
Like other ducks feeds basically submerged plants and grasses on the banks of the lakes, but also eats aquatic invertebrates, small fish and tadpoles.
The nest is built on the ground. The female lays eggs 8 to 14, where the male can help hatch. Both take care of the puppies.
It is found in almost any body of water along its wide distribution that goes from Argentina to Central America and interestingly also occurs in West Africa. Can be found even in polluted lakes. It is most active in the twilight and night. It is not uncommon to hear the chirp of this bird flying over the night even big cities in droves. Enough to form flocks of several dozen individuals, especially during seasonal migrations that performs in the South.