found: Work cat.: Delaney, M. Birdbrain Amos, 2002.
found: Oakland Zoo online, Animals A-Z, Dec. 26, 2000(Cattle Egret; also known as Buff-backed heron, as well as a number of common names in North America: ... Tick bird)
found: Cklist. No. Am. birds:p. 44 (Bubulcus ibis, Cattle egret. Also known as Buff-backed heron)
found: Handbook of the birds of the world, 1992:v. 1, p. 415 (Cattle egret, Bubulcus ibis; other common names: buff-backed heron)
found: Nations encyclopedia via WWW, Aug. 21, 2006(Sierra Leone flora and fauna: cattle egret or tickbird)