Another popular section of Parque das Aves features toco toucans. This common toucan lives in abundance in a large section of eastern and southern Brazil including the region around Foz do Iguaçu. The fascinating feature of this cartoon-like bird is their enormous bill. This yellow-orange bill ranges from six to nine inches long. That is 30% to 50% of the bird’s body. So why is this colorful appendage so big? The primary purposes are mate selection, peeling fruit, regulating body heat and a visual warning to predators.