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Capuchin monkeys’ stone-tool use evolution

Originally posted on Dear Kitty. Some blog: This June 2018 video says about itself: White-faced capuchin (Cebus capucinus imitator) stone tool use in Coiba National Park, Panama Higher Quality Supplemental Video from the paper “Habitual stone-tool aided extractive foraging in white-faced capuchins, Cebus capucinus.” Currently up on BioRxiV as a preprint and in peer review. Preprint available here. By Bruce Bower, 11:00am, June 24, 2019: Capuchin monkeys’ stone-tool use has evolved over 3,000 years A Brazilian site shows the animals’ long history of selecting various types of pounding devices Excavations in Brazil have pounded out new insights into the handiness of ancient monkeys. South American capuchin monkeys have not only hammered and dug with carefully chosen stones for the last 3,000 years, but also have selected pounding tools of varying sizes and weights along the way. Capuchin stone implements recovered at a site in northeastern Brazil display signs of shifts during the last three millennia between a focus on dealing with either relatively small, soft foods or larger, hard-shelled edibles, researchers report. These discoveries, described online June 24 in Nature Ecology & Evolution, are the first evidence of changing patterns of stone-tool use in a nonhuman primate. “It’s likely that local vegetation changes after 3,000 years ago led to changes in capuchin stone tools”, says archaeologist Tomos Proffitt of University College London. The new findings raise the possibility that chimpanzees and macaque monkeys, which also use stones to pound…

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Beluga whales from aquarium to sanctuary

Originally posted on Dear Kitty. Some blog: This 22 June 2019 video says about itself: Two beluga whales make epic journey from China to Iceland sanctuary Two beluga whales from an aquarium in Shanghai have arrived in Iceland on June 19 to live out their days in a unique marine sanctuary that conservationists hope will become a model for rehoming some 3,000 of the creatures currently in captivity.

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