Range map of Velvety Black-tyrant (Knipolegus nigerrimus)
Adapted from: BirdLife International. 2017. Knipolegus nigerrimus (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2017: e.T22700256A110737655. https://dx.doi.org/10.2305/IUCN.UK.2017-1.RLTS.T22700256A110737655.en. Downloaded on 05 July 2021.
Cephas