A recent 2021 study suggests that a tough early life makes adult female baboons less sociable. They failed to give friendly grunts before social interactions between baboons.
Researchers at the New York University in America and Kenya investigated 50 years of research on three groups of wild female Olive Baboons (Papio anubis). The baboon groups were part of the Uaso Ngiro Baboon Project. The research team also recorded more than 2,600 hours of observations of 31 females from the three groups. The researchers noted their activity, social interactions, social partners, and vocalisations.
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Every year thousands of wildebeest drown or are eaten by crocodiles when they cross Kenya’s Mara river during their annual migration.
The mass annual journey of 1.2 million wildebeest (also known as gnus) from the Serengeti in Tanzania to the Mara in Kenya in Africa is the largest mammal migration in the world, and certainly the largest annual mass drowning of wildebeest.
Amanda Subalusky at Yale University has measured the nutrients released into the river ecosystem from the 1100 tonnes of biomass from about 6,200 wildebeest carcasses (dead bodies) that float downstream in the Mara river each year. That includes 100 tonnes of carbon, 25 tonnes of nitrogen and 13 tonnes of phosphorus.
Subalusky says that crocodiles and birds benefit from the carrion (decomposing bodies), particularly vultures. But the slow release of nutrients benefits everything in the river from fish to insects.
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