Amazon Basin in south-eastern Colombia and eastern Ecuador south through eastern Peru, western Brazil (east to R Negro and R Purus) and northern Bolivia.
 
Population
Estimated population is unknown (2010).
Yellow-billed Nunbird (Monasa flavirostris) [XC683913]
by Jacob Wijpkema from Bosque de los Carpinteros - San Jorge\/Morelia, Caquet\u00e1, Colombia (song)
Yellow-billed Nunbird (Monasa flavirostris) [XC257982]
by John V. Moore from Napo: R\u00edo Holl\u00edn 17 road km NE Archidona, Ecuador (call, calls)