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Group sizes of giraffes in Kenya: the influence of habitat, predation and the age and sex of individuals

Giraffe group sizes appear to vary in response to localized ecological and environmental factors, but there has been little investigation of how social factors or predation risk affect group size in giraffes. We studied two adjacent, enclosed populations of Rothschild’s giraffes in Kenya, and used 591 records of groups to determine the relative influence of a series of variables on group size. One population was free from any risk of predation, while the other area contained a high density of

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