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Chestnut-eared Aracari

Pteroglossus castanotis (Piciformes - Ramphastidae), better known as Chestnut-eared Aracari, is an Aracari species native to central and south-eastern South America, distinctive by having yellow underparts, with a single red band across the chest. 

In general, toucans and aracaris are known for their large and showy bills. Despite its size, the bill is very light, being composed of bone struts filled with spongy tissue.

The large bill of these birds is a highly efficient thermoregulation system. Also, it allows the bird to reach deep into tree holes to access food (they eat mostly fruit and insects). The bills of females are usually smaller.

Reference: [1] - [2]

Photo credit: ©Almir Cândido de Almeida | Locality: Pantanal, Poconé, Mato Grosso do Sul, Brazil

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