Fig. 3. Map showing risk assessment for avian influenza occurrence based on expert opinion and quantified reporting rates for species of 16 southern African anatids (Harrison et al. 1997). Note that the data for Botswana were recorded at half-degree (30x30) resolution in the southern African Bird Atlas, and that data for Mozambique (for completeness, shown here from south of the Zambezi) were not included in this analysis.