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Descriptive Attribute Value(s)
Grouping Ape
Observation Number (Open Context) 31
Subspecies Pan troglodytes schweinfurthii
Common name Eastern chimpanzee
Period of study June 1960 - December 1961, June 1962 - December 1962
Country or Region Tanzania
Method Direct observation
Wet season October - May
Dry season June - October (Fawcett 2000)
Environment Evergreen forest, semi-deciduous forest, woodland, and grassland (Wrangham 1977)
Altitude (m) 683 - 1500 (Wrangham 1977)
% Fruit 42.5
% Leaves 24.1
% Flowers 6.9
% Seeds 4.6
% Pith & stems 3.4
% Vertebrates 10.3
% Invertebrates 5.7
% Bark and cambium 2.3
Fruit availability peak November - January, May (Wrangham 1977)
Low fruit availability July - October (Wrangham 1977)
Percentages Based on average diet composition
Notes Additional information from Fawcett (2000)
Reference Goodall 1965
Full Reference
Goodall, J. (1965). Chimpanzees of the Gombe Stream Reserve. In: I. deVore (eds) Primate Behavior: Field studies of monkeys and apes. London, Holt, Rinehart and Winston. Pages: 425-473. [Available at: ]
Suggested Citation

Rebecca Haywood. (2020) "Ape 31 from Africa/Tanzania/Gombe Stream Chimpanzee Reserve, Tanzania". In Database of non-human primate dietary studies. Rebecca Haywood (Ed). Released: 2020-08-21. Open Context. <https://opencontext.org/subjects/c499977e-2ce7-4e9d-abdf-a67bdf85d652> ARK (Archive): https://n2t.net/ark:/28722/k24q87v7m

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