Butler, H., & Kok, O. (2006). Feeding association between cattle egrets (<i>Bubulcus ibis<i/>) and mammal hosts in the central Free State. Suid-Afrikaans Tydskrif Vir Natuurwetenskap En Tegnologie / <i>South African Journal of Science and Technology</I&gt;, 25(1), 1-18. https://doi.org/10.4102/satnt.v25i1.139