Distribution map of Unicoloured Blackbird. Adapted from: Jaramillo, Alvaro and Peter Burke, New World Blackbirds, Christopher Helm, London, 1999, 431 p. (ISBN 0713643331) (OCLC 40798493)
Adapted from: BirdLife International. 2018. Agelasticus cyanopus. The IUCN Red List of Threatened Species 2018: e.T22724184A132027717. https://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T22724184A132027717.en. Accessed on 05 March 2022.
Cephas