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.
♦ ²Evaluating Diet Composition of Pronghorn in Wind Cave National Park, South Dakota, CHRISTOPHER N. JACQUES, JARET D. SIEVERS, JONATHAN A. JENKS, CHAD L. SEXTON, and DANIEL E. RODDY, The Prairie Naturalist 38(4): December 2006, pp. 239-250