Final answer:
Chimpanzees and capuchins do not rely heavily on observational learning in their natural environments, suggesting other factors influence learning. Diverse behaviors in different locations show the role of environmental pressures in the development of species-specific adaptive behaviors.
Step-by-step explanation:
The observation that chimpanzees and capuchins live in social groups yet do not make much use of observational learning in their daily lives suggests that while the capacity for learning through observation exists, it is not the primary mode of learning for these species. This could be due to the complexity of the behaviors, the necessity of learning through active participation, or the specific social dynamics that govern how and when observational learning is advantageous.
While some studies, like the one regarding chimps learning to suck juice from straws, show the potential for observational learning, these instances may not reflect everyday practice.
Moreover, the diverse hunting techniques and tool use observed in Gombe National Park and Fongoli indicate environmental influences on behavior and learning. Therefore, it's critical to consider the context in which such learning occurs and the adaptations that may arise from different environmental pressures.