Attributes / relations provided by
♦ 1Conservation status and limiting factors in the endangered population of Egyptian vulture (Neophron percnopterus) in the Canary Islands, José A. Donázar, César J. Palacios, Laura Gangoso, Olga Ceballos, María J. González and Fernando Hiraldo, Biological Conservation 107 (2002) 8997
♦ 2Assessing the diet of nestling Bearded Vultures: a comparison between direct observation methods, Antoni Margalida, Joan Bertran, and Jennifer Boudet, J. Field Ornithol. 76(1):4045, 2005