João-de-barro (Furnarius rufus) It is known for its characteristic nest shaped clay oven, strategically positioned in the opposite direction to the rain and the wind and built jointly by the male and the female. Couples are monogamous and remain together for a long time. Coexist in harmony with humans and the environment created by him,as in the case of this public energy eletric pole, which has a height that deters predator.The nest is not yet complete, they even make a chamber for the eggs.