Chestnut-eared Aracari / Pteroglossus castanotis

The Chestnut-eared Aracari, Pteroglossus castanotis is a native bird to central and southeast South America of the Ramphastidae family, the toucans, toucanets, barbets, aracaris, etc. Although it resembles the Black-necked Aracari, it is a larger, more colorful bird.

Distribution

Range: Amazon Basin and Cerrado
The range of the Chestnut-eared Aracari is the southern Amazon Basin, especially the southwestern Basin, also the Andean foothills; a narrowing range extension enters central-southern Colombia by 900 km.
The southern Amazon Basin range narrows in the southeast to only the upstream half-headwaters of the north-flowing Amazon River tributaries; this range countinues southeastwards into the central and southern Cerrado and ends at eastern Paraguay, southeastern Brazil and the extreme northeast of Argentina.

Its bill is mostly black with a yellow tip and a yellow line along the middle with yellow "teeth". Its underparts are yellow with a single red band across the chest and it also has a red rump. The chestnut "ears" and collar tend to look black at a distance.

While araçaris tend to be more vegetarian than toucans, the Chestnut-eared is known to attack colonies of Yellow-rumped Cacique (Cacicus cela) to raid the nests.

The Chestnut-eared Araçari forms a superspecies with the Black-necked Araçari (Pteroglossus aracari)
There are illustrations in Hilty & Brown, Plate 20; Sick, Plate 24 and in HBW, Volume 7, Pages 230 and 263.

There are recordings and a distribution map on xeno-canto.