The Rufous Hornero or Red Ovenbird (Furnarius rufus) is a medium-sized bird in the family Furnariidae.

It occurs in eastern South America.

Songs in the Rufous Hornero are sexually distinct. The rapid trill that is usually heard as part of the duet is faster in the male, slower in the female, and both beat their wings at their sides while singing and the wings beat at the same rate as their trill. Thus, while watching an observer may identify the sex by how fast their wings beat while singing.

The nest of the species is typical for the genus, a large thick clay "oven" placed on a tree, or man made structures such as fenceposts, telephone poles or buildings. It is a common sight in Brazil, Argentina and Uruguay.
(from Wikipedia)

The species is known in Brazil as "joão-de-barro".

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Suborder: Tyranni
Infraorder: Tyrannides
Superfamily: Furnarioidea
Family: Furnariidae
Subfamily: Furnariinae
Genus: Furnarius Vieillot, 1816
Species: F. rufus (Gmelin, 1788)
Binomial name: Furnarius rufus

The Smooth-billed Ani (Crotophaga ani) is a large near passerine bird in the cuckoo family found in open and semi-open country and areas under cultivation.

It is a resident breeding species from southern Florida, the Bahamas, the Caribbean, parts of Central America, south to western Ecuador, Brazil, and northern Argentina.

It measures 30–36 cm (12–14 in) in length and weighs 71–133 g (2.5–4.7 oz). (from Wikipedia)

They are known in Brazil as "anu-preto".

The Southern Lapwing (Vanellus chilensis) is a wader in the family Charadriidae, order Charadriiformes. It is a common and widespread resident throughout South America. This bird is particularly common in the basin of the Rio de la Plata. It has also been spreading through Central America in recent years.

It is 32 to 38 centimetres (13 to 15 in) in length and weighs approximately 250 to 425 grams (8.8 to 15.0 oz). It is equipped with red bony extensions under the wings (spurs), used to intimidate foes and fight birds of prey. (from Wikipedia)

It is known in Brazil as "quero-quero".