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Vrezec, Al (March 2007). "Endemizem ptic" [Endemism of Birds] (PDF). Svet Ptic (in Slovenian). 13 (1): 6–11. ISSN1580-3600. Archived from the original(PDF) on 3 January 2014.
"Çevre Ve Orman Bakanliği". The Birecik Bald Ibis Breeding and Repopulation Program (in Turkish). Turkish Ministry of Environment and Forestry Directorate of Natural Preservation and National Parks. Archived from the original on June 22, 2008.
"Waldrapp ibis (Geronticus eremita)"(PDF). The WAZA Network - links ex situ with in situ conservation. World Association of Zoos and Aquariums (WAZA). Archived from the original(PDF) on 5 February 2009. Retrieved 3 December 2008.
"Proyecto Eremita"(PDF) (in Spanish). Ministerio de Defensa y la Armada Española. Archived from the original(PDF) on 5 February 2009. Retrieved 24 November 2008.
Vrezec, Al (March 2007). "Endemizem ptic" [Endemism of Birds] (PDF). Svet Ptic (in Slovenian). 13 (1): 6–11. ISSN1580-3600. Archived from the original(PDF) on 3 January 2014.