Forcey, John M. “Breeding of Cooper’s Hawk (Accipiter Cooperii) in Oaxaca, Mexico”. Huitzil Revista Mexicana de Ornitologí­a 2, no. 2 (October 10, 2022): 21–23. Accessed September 23, 2026. http://www.mexorn.org/index.php/huitzil/article/view/8.