Shobrak, M. 2011. Changes in the Number of Breeding Pairs, Nest Distribution and Nesting Trees used by the Lappet-Faced Vulture <i>Torgos tracheliotus</i> in the Mahazat As-Sayd Protected Area, Saudi Arabia. Journal of the Bombay Natural History Society (JBNHS). 108, 2 (Aug. 2011), 114–119.