"It used to really frustrate us to tell people going to South Africa that their best bet was to look for a field guide once they got there. We had heard such praise for the ""SASOL"" guide, that we were reluctant to sell the others. Fortunately, Princeton University Press took that book, and then expanded it north to the Sahara.
Speaking of ""Why didn't they think of this sooner?"", the plates have gray lines grouping all of the birds of the same species together!"