Which bar represents the birthrate of the lowest-ranked female gelada baboons?

The red bar signifies the birthrate of the lowest-ranked female gelada baboons. In the context of gelada baboon social structures, lower-ranking females often experience decreased access to resources and mates, which can impact their reproductive success. The red bar effectively illustrates this disparity in birthrates by representing the lowest figures among the female population in this species.

In behavioral ecology, it is well-documented that social hierarchy plays a crucial role in reproductive outcomes. Higher-ranking females typically have better conditions to raise offspring and secure mating opportunities, thus explaining the lower birthrate associated with lower-ranked individuals. Understanding these dynamics is key to comprehending the social structure of gelada baboons and their reproductive strategies.