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
♦ 2Body size, diet and reproductive ecology of Coluber hippocrepis in the Rif (Northern Morocco), Juan M. Pleguezuelos, Soumia Fahd, Amphibia-Reptilia 25: 287-302 (2004)