Eating leaves in a national park in southwestern Uganda Silverback = 3 days (AP = joint)
[Collaboration in London]A team of German researchers said in the British scientific journal Scientific Reports that the act of “drumming” by a male mountain gorilla striking the chest may be an indication of body size. Announced. The British PA news agency reported on the 8th.
The research team observed a male wild mountain gorilla called “Silverback” in a national park in Rwanda, Africa. When the frequency of the sound due to drumming was measured, the sound produced by a large gorilla was significantly lower than that of a small gorilla.
The researchers speculated that larger males may have a larger sac-like organ “laryngeal sac” near the vocal cords and a lower frequency of sound when they hit the chest.