Thiollay, Jean-Marc (2006-04-13). “The decline of raptors in West Africa: long-term assessment and the role of protected areas” (英語). Ibis148 (2): 240–254. doi:10.1111/j.1474-919x.2006.00531.x. ISSN0019-1019.
Chittenden, Hugh (2016). Roberts bird guide : illustrating nearly 1,000 species in Southern Africa. Davies, Greg (Ornithologist), Weiersbye, Ingrid,, John Voelcker Bird Book Fund., Percy FitzPatrick Institute of African Ornithology (Cape Town, South Africa) (Second ed.). Cape Town. ISBN9781920602017. OCLC958354485
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Thiollay, Jean-Marc (2006-04-13). “The decline of raptors in West Africa: long-term assessment and the role of protected areas” (英語). Ibis148 (2): 240–254. doi:10.1111/j.1474-919x.2006.00531.x. ISSN0019-1019.
