Wikimedia Commons has media related to Lioptilus nigricapillus.
^ a bBirdLife International (2017). "Sylvia nigricapillus". IUCN Red List of Threatened Species. 2017: e.T22716650A118400733. doi:10.2305/IUCN.UK.2017-3.RLTS.T22716650A118400733.en. Retrieved 17 November 2021.