1. Payne, R. B. (1997). Family Cuculidae (cuckoos). In Handbook of the Birds of the World, Volume 4, (J. del Hoyo, A. Elliott and J. Sargatal, Editors). Lynx Edicions, Barcelona, Spain. pp. 508–607.
2. Payne, R.B. (2005). Nestling mouth markings and colors of Old World finches Estrildidae: mimicry and coevolution of nesting finches and their Vidua brood parasites. Misc. Publ. Univ. Mich. Mus. Zool. 194: 1–45.
3. Wells, D. R. (1999). The Birds of the Thai-Malay Peninsula. Volume 1. Non-passerines. Academic Press, London, UK.
4. Erritzøe, J., C. F. Mann, F. P. Brammer, and R. A. Fuller (2012). Cuckoos of the World. Christopher Helm, London, UK.
5. Baker, J. K. (2016). Identification Guide to European Non-Passerines. British Trust for Ornithology, Thetford, Norfolk.