1. BOYES, R.S. 2009. Ecology of Meyer’s parrot in the Okavango Delta, Botswana. Ph.D. thesis. University of KwaZulu-Natal, Pietermaritzburg, South Africa.
2. ELLERY, K. AND ELLERY, W.N. 1997.Plants of the Oka- vango Delta: a Field Guide. Tsaro Publishing, Durban.
3. FORSHAW, J.M. 1989.Parrots of the World, 3rd revised edn. Willoughby, Lansdowne Editions, Melbourne.
4. JUNIPER, T. & PARR, M. 1998.Parrots - A Guide to the Parrots of the World. Pica Press, Sussex.
5. PALGRAVE, K.C. 1977.Trees of Southern Africa. Struik Publishers, Cape Town.