Why did prehistoric hunters prefer to kill female mammoths?

New research suggests that prehistoric hunters targeted female woolly mammoths more frequently than their male counterparts, according to findings published in Current Biology. Scientists analyzed genetic data from bone remains found at eleven sites across Poland, the Czech Republic, Austria, Germany, and Russia. The study indicates that early humans were highly selective in choosing which mammoths to hunt, with females being the primary targets. Researchers are still investigating why this imbalance occurred, though several hypotheses have been proposed. The research team, led by Hannah Moots, a researcher at the International Centre for Paleogenetics, used genetic information extracted from mammoth bones to determine the sex of the animals hunted. Their analysis revealed that a disproportionately high number of the mammoths killed were females. This pattern raises questions about the strategies employed by ancient hunters and the behavior of mammoth herds during the Ice Age. One theory is that female mammoths led migratory herds in a manner similar to modern-day elephant groups, moving along predictable routes across the landscape. Today’s elephant herds, led by matriarchs, maintain stable home ranges and follow consistent movement patterns. In contrast, male elephants tend to be solitary or form smaller bachelor groups, wandering over larger areas. If mammoth herds followed a similar structure, with females leading the way, they would have been easier for human hunters to track and locate. Another possibility is that female mammoths were easier to capture because they were generally smaller and less aggressive than males. According to Love Dalén, an evolutionary geneticist and co-author of the study, adult male mammoths could weigh up to six tons and stand nearly 3.4 meters tall. Females, while still large, averaged around four tons and stood approximately 2.9 meters tall. This size difference may have made females more vulnerable to human hunting techniques, such as driving them into traps or ambushes using spears and thrusting weapons. The study also highlights specific archaeological sites where evidence of mammoth hunting has been uncovered. One of the largest known kill sites is located near Kraków Spadzista in southern Poland, dating back roughly 25,000 to 30,000 years. This site contains the remains of more than 100 mammoths, alongside stone tools and signs of mass killing. These findings suggest that prehistoric humans organized hunts on a large scale, possibly coordinating efforts to drive entire herds into confined spaces before attacking. Woolly mammoths disappeared from Eurasia and North America toward the end of the last ice age, approximately 10,000 to 12,000 years ago. Rapid climate change during this period caused open grasslands, where mammoths grazed, to be replaced by forests and wetlands. This shift in habitat likely disrupted the availability of food and suitable living conditions for mammoths, contributing to their decline. The last surviving population was found on Wrangel Island, a remote island off the coast of Siberia, where they persisted until about 4,000 years ago. The study provides new insights into the relationship between early humans and mammoths, emphasizing how human activity may have played a role in the extinction of these iconic creatures. While environmental factors such as climate change are widely accepted as key contributors to the mammoths' disappearance, the selective targeting of females by human hunters adds another layer of complexity to the understanding of their final days. Further research will focus on analyzing additional genetic samples and examining other archaeological sites to confirm whether the pattern of targeting female mammoths was widespread across different regions. Scientists hope to uncover more about the social structures of mammoth herds and the specific tactics used by prehistoric hunters to ensure successful kills.