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Male chimpanzees hunt in groups more than females. Female chimpanzees tend to hunt solitarily. If a female chimpanzee were to participate in the hunting group and catch a Red Colobus, it would likely immediately be taken by an adult male. Female chimpanzees are estimated to hunt ≈ 10-15% of a community's vertebrates. [122]
Male and female western chimpanzees differ in their prey. In Fongoli, Senegal, Senegal bushbabies account for 75% of females' prey and 47% of the males'. While males will prey more on monkeys, such as green monkeys (27%) and Guinea baboons (18%), only males were observed to hunt patas monkeys and only females were observed to hunt banded mongooses.
[4] Stella Marsden, who ran the chimpanzee rehabilitation project, stated that Lucy’s age and background meant she was not a suitable candidate for rehabilitation. A more humane option for Lucy was to retire with other chimpanzees who could not be rehabilitated either and to continue to receive the food, magazines, toys et cetera that she had ...
Female chimpanzees will show deference to the alpha male by presenting their hindquarters. Common chimpanzees in Gombe Stream National Park Female chimpanzees also have a hierarchy, which is influenced by the position of a female individual within a group.
Extant primates exhibit a broad range of variation in sexual size dimorphism (SSD), or sexual divergence in body size. [4] It ranges from species such as gibbons and strepsirrhines (including Madagascar's lemurs) in which males and females have almost the same body sizes to species such as chimpanzees and bonobos in which males' body sizes are larger than females' body sizes.
Ai (born in 1976, estimated) is a female western chimpanzee (Pan troglodytes verus), [1] currently living at the Primate Research Institute of Kyoto University (acronym KUPRI). She is the first subject of the Ai project , a research program started in 1978 by Kiyoko Murofushi and Tetsuro Matsuzawa aimed at understanding chimpanzee cognition ...
Joao, aged 82 years, 19 days, is the oldest chimpanzee ever; oldest male chimpanzee ever; and current oldest living chimpanzee. The oldest female chimpanzee ever was Little Mama, who reached to the final age of 80 years, 317 days. The oldest living female chimpanzee is Susie, aged 71 years, 19 days.
Although males are perceived as the more aggressive sex in chimpanzees, studies at Gombe have revealed there is substantial aggressive interactions among females with each other. [7] One of two contexts for female-female aggressive encounters in Gombe is the immigration of females into new communities upon reaching sexual maturity. [7]