Attributes / relations provided by
♦ ¹del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ²Microbial digestion in the herbivorous lizard Uromastyx aegyptius (Agamidae), W. J. Foley, A. Bouskila, A. Shkolnik and I. Choshniak, J. Zool., Lond. (1992) 226, 387-398