Figure 4
From: Quadratic relationships between group size and foraging efficiency in a herbivorous primate
Group size distribution of the Virunga mountain gorillas. The y-axis indicates the number of groups that were recorded within each size category during eight censuses of the entire population from 1971–201074,88,89,90,91,92,93,94,95. The numbers along the x-axis represent the largest group size that was included in each category.
