Nocturnal Mating Behavior in Tibetan Macaques: The Low‐Ranking Male's Path to Mating Success

Nocturnal mating behavior in Tibetan macaques offers low-ranking males equal mating success to high-ranking ones, challenging traditional dominance-based reproductive strategies. A four-year study (2021-2025) at Mount Huangshan, China, using solar-powered night-vision cameras, revealed that nocturnal mating follows a bimodal pattern and is more frequent, prolonged, and non-forceful in the absence of high-ranking individuals. Lunar illumination positively correlated with mating frequency, suggesting darkness as an adaptive tactic for subordinates to increase reproductive opportunities. This research expands understanding of behavioral flexibility in diurnal primates and provides new insights into human mating behavior.

Zhang, T., Yang, P.-P., Li, W.-B., Yang, D.-X., Zhang, X.-W., Gao, X., Zhang, Q.-X., Wang, X., & Li, J.-H. (2026). Nocturnal Mating Behavior in Tibetan Macaques: The Low‐Ranking Male’s Path to Mating Success. American Journal of Primatology, 88(3). Portico. https://doi.org/10.1002/ajp.70138