This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Friday, 9 April 2021
Chest Beating
Chest beating, in male gorillas, is a bit of a cinema stereotype. Studies have, however, now been carried out on 6 male Mountain gorillas in Rwanda's Volcanoes National Park, to determining its function ( https://www.theguardian.com/science/2021/apr/08/gorilla-beat-chest-signal-size-avoid-fight-with-rival-researchers-say). The Primatologists, doing this study, used 2 green lasers, so they could accurately determine the width of each male's back. Chest beating seems to provide 'honest information' (the animal can't cheat because chests of different size produce different sounds) about the likely strength of the male. Chest beating appears to stop males getting into potentially damaging fights with bigger, stronger opponents.
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