Explore the complex behaviors of organisms during foraging and hunting in this 50-minute lecture from Yale University's "Principles of Evolution, Ecology and Behavior" course. Delve into the Marginal Value Theorem and how foragers assess costs and benefits to adjust their actions. Examine risk management strategies, including resource hoarding, and learn how predators influence prey appearance through crypsis and conspicuousness. Investigate group hunting dynamics in higher organisms like primates and whales. Gain insights into how these economic decisions shape survival and reproduction in various species. The lecture covers topics such as fitness measures used by foragers, risk-handling strategies, and the evolutionary implications of group hunting behaviors.