Rasmussen D R
Folia Primatol (Basel). 1981;36(3-4):232-42. doi: 10.1159/000155999.
Daily censuses were collected on a troop of 108-130 yellow baboons (Papio cynocephalus) for 22 months. 12 adult females, 5 subadult males, and 26 adult males either emigrated from or immigrated into the troop. 10 adult females immigrated into the troop over a 4-month period. 2 adult females emigrated from the troop. 1 of the latter probably conceived while absent. This female returned to the troop when pregnant and subsequently bore and successfully raised the offspring. There was a strong negative correlation between the relative size of the subadult males (a correlate of age) and the date on which they emigrated. Only 6 old and past-prime males never emigrated from the troop.
对一群108至130只黄狒狒（黄狒）进行了为期22个月的每日普查。12只成年雌性、5只亚成年雄性和26只成年雄性从该群体中迁出或迁入。10只成年雌性在4个月的时间里迁入该群体。2只成年雌性从该群体中迁出。其中1只可能在离开时怀孕。这只雌性怀孕后回到群体，随后产下并成功抚养了后代。亚成年雄性的相对大小（年龄的一个相关指标）与它们迁出的日期之间存在很强的负相关。只有6只年老及过了壮年的雄性从未从该群体中迁出。
