The White-eared Puffbird is a resident of tropical deciduous forest and gallery forest from eastern Peru and central Brazil south to Paraguay and northeastern Argentina. The White-eared Puffbird has a dark brown crown, white collar, rufous-brown upperparts, white underparts and a conspicuous dark brown patch on the bird's lower ear coverts. The White-eared Puffbird still-hunts from mid-level perches in trees and shrubs, and will take a wide range of prey, from insects to reptiles to crabs. These birds have one of the most southerly distributions of any species of puffbird; there is some evidence that the southernmost populations of White-eared Puffbird are migratory. White-eared Puffbirds have also been observed to lower their body temperatures and enter into torpor during cool weather.