The arrival of a new alpha male in the troop often means death for young baboons.
Male baboons take longer to mature sexually than the females, typically between seven and eight years of age. It’s around this time when a young male will leave the safety of his troop to venture out in search of unrelated females. This is a stressful time for the dispersing male. He is on his own and vulnerable to other males and attacks by predators, including humans.
When a dispersing male approaches a new troop, he is met with aggression from the resident males. Females with babies will stay close to the resident males for protection.
Sadly, the arrival of a new alpha male in the troop often results in the death of young baboons, called infanticide. This renders the females in the group sexually respective much sooner and the new alpha male can start his own family.
We don’t own the planet Earth, we belong to it. And we must share it with our wildlife. - Steve Irwin, The Crocodile Hunter