This group was formed after the death of the leading silverback of the group thirteen in 1992. At first, the group was known as Amavubi meaning wasps due to the hard time during the period of habituation. It was only composed of three silverbacks: Guhonda, Ryango and Ruhennyi.
After the death of the leading silverback of the group thirteen, some of them took the females from group thirteen: Ijisho, Gukunda, Kampanga and later on, Safari, other females from group eleven. Thus, a new group was formed with four females and two silverbacks, The name of the group was then changed to Sabyinyo.
Sabyinyo being the mountain where the group was first localized. As the group composition keeps on changing depending on the rate of birth, death, emigration and migration, new members can be found in the group as well as others left the group. Has now 11 members. This group has a particularity of its kindness and the hugest silverback in the world. This silverback likes to beat his chest showing that he is powerful.N.B Mountain gorillas leave their groups for two reasons: to avoid inbreeding or to make their own groups.