Attributes / relations provided by
♦ 1SYMENS, P. (1988).
Effects of the mass migration of desert locusts Schistocerca gregaria on birds in the Taif area. Arabia.
♦ 2del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.