Butler, H. (2004). Dietary composition of cattle egrets (Bubulcus ibis) in the central Free State. Suid-Afrikaans Tydskrif Vir Natuurwetenskap En Tegnologie / <i>South African Journal of Science and Technology</I&gt;, 23(4), 90-98. https://doi.org/10.4102/satnt.v23i4.198