I got 38 life birds on my week hunting in RSA. I would see a strange bird and then look at a bird book back at the ranch house in the evening. That book was in Afrikaans. A similar book but not colored and in English was useful for cross reference. For my second trip to Africa, Zim in that case, I bought a book called "Birds of Southern Africa" from Amazon.com. It's much like the Peterson guides except there are many more bird species in southern Africa.
