Chestnut-eared aracari
The chestnut-eared aracari or chestnut-eared araçari is a near-passerine bird in the toucan family Ramphastidae. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, and Peru.
Taxonomy and systematics
Two subspecies of chestnut-eared aracari are recognized, the nominate P. c. castanotis and P. c. australis.Description
The chestnut-eared aracari is long and weighs. Males and females have the same bill coloration, though the female's bill is shorter. The bills of nominate subspecies adults have a yellow line at the base and a mostly black mandible. The maxilla has a black stripe on the culmen, a triangle of black narrowing toward the tip, orange-yellow between them, and black and ivory markings on the edge that look like teeth. Adult males have a black crown and upper nape, a chestnut lower nape, a dark green back, and a red rump. They have blue facial skin and the sides of their face and their upper throat are brown to chestnut. Their lower throat is black, their breast yellow, their lower breast red and chestnut-black, their belly yellow, and their thighs usually cinnamon. Adult females are browner than males on the crown, nape, and upper throat, and the black band on the lower throat is thinner. Juveniles are duller overall, with a muted bill pattern without the "teeth" and no yellow basal line.Subspecies P. c. australis is paler overall than the nominate. Their cheeks and upper throat are rusty, their breast band red and rufous, and their thighs green and rusty. Their bill has a wider orange basal line than the nominate and has a red mark next to it.
Distribution and habitat
The chestnut-eared aracari is a bird of the western and southern Amazon Basin. The nominate subspecies is the more northerly. It is found from southern and eastern Colombia south through eastern Ecuador to southeastern Peru, east into Brazil along the Amazon to the Rio Negro and Acre and Amazonas states. P. c. australis is found from south of the Amazon in north central Brazil south through northern Bolivia, eastern Paraguay, and northeastern Argentina's Misiones Province into southeastern Brazil to Minas Gerais, São Paulo state, and Rio Grande do Sul.The chestnut-eared aracari is found in a wide variety of landscapes, many of which are characterized by standing or flowing water. Examples include wet forest by lakes and rivers, várzea, forested river islands, and swamp and gallery forest. It also occurs at edges, clearings, and disturbed areas of drier forest, bamboo and canebrakes, cerrado, and coffee plantations. In elevation it is mostly found below but occurs up to about at some Andean locations and to more than in southeastern Brazil.