Hayes, Floyd E. “Intraspecific Kleptoparasitism in the Great Kiskadee (Pitangus Sulphuratus)”. El Hornero 13, no. 3 (September 1, 1992): 234–235. Accessed November 30, 2025. https://elhornero.avesargentinas.org.ar/home/article/view/1074.