Chunky, bull-headed puffbird of lowland and foothill rainforest east of the Andes to far western Brazil. Underparts are pale with dark, vertical streaks. Also note stout, yellowish bill, and brown cap and back. Very similar to Eastern Striolated-Puffbird (limited overlap in Brazil and possibly Bolivia), but has thicker streaks on underparts. Singles or pairs perch motionless for long periods high in the canopy; usually heard before seen. Typical song is a whistled “wip wip-whirrr?, whurrrr”, with the other member of the pair responding at slightly different pitch.