Figure 1. Proportion of vultures with diclofenac residues, visceral gout or both (indicated by the black area of each pie chart) at 13 localities where dead or dying vultures were found. The area of circles is scaled according to the number of birds assessed per site, which is given next to each. The circle furthest to the left represents data from a previous study in Pakistan (Oaks et al. 2004 [DOI: 10.1038/nature02317]).