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"Recently, Dr. Amy Lu of the State University of New York, Stony Brook, delivered a CHES lecture "Male Takeovers and Infanticide Risk: Broadening the Scope of Potential Costs". Dr. Lu's presentation was based on many years' research with Jacinta Beehner and Thore Bergman (University of Michigan) on wild geladas (Theropithecus gelada) living in the high altitude regions of Ethiopia. Dr. Lu presented fascinating insights, not only about the adaptive vale of infanticide as a male reproductive strategy, but also about female counter-strategies to infanticide and, especially, the costs of infanticide—both direct and "hidden"—on females and youngsters."