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.
♦ 2Comparison of Saker Falcon Falco cherrug Prédation during and after the
Breeding Period, János Bagyura, László Haraszthy, Sándor Gróf and Iván Demeter, Chancellor, R. D. & B.-U. Meyburg eds. 2004 Raptors Worldwide, p. 673-677