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Determination of individual home range size and group composition of the main giraffe population at Entabeni Game Reserve

Large variations in giraffe home range size have been reported in previous studies, where individual home ranges usually overlap. The social structure of giraffe populations is complex and not much research has been done on their group size and group composition. To be able to identify the individual giraffe roaming the lower escarpment of Entabeni Game Reserve (EGR), Limpopo, South Africa an identification catalogue was initially created in February 2011. A total number of 45 giraffe were individually identified in

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Ecology, Behaviour and Conservation Status of Masai Giraffe (Giraffa camelopardalis tippelskirchi) in Tanzania

The focus of this thesis is on the behaviour, ecology and conservation of Masai giraffe (Giraffa camelopardalis tippelskirchi) in Tanzania. Giraffes are the most elegant, conspicuous and tallest animals of the African savannah. Giraffes prefer savannah and are responsible for the architectural beauty of trees through browsing. Giraffes are social but are non territorial because individuals within a group are in constant change. Females are more often in mixed herds with calves, whereas males maintain a primarily solitary life. Giraffes

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Factors Affecting Group Size and Vigilance Behaviour of Maasai Giraffe (Giraffa camelopardalis tippelskirchi) on the Serengeti-Ngorongoro Ecosystem, Tanzania

This study investigated the factors affecting different group sizes of Maasai giraffe (Giraffa camelopardalis tippelskirchi) in the Serengeti-Ngorongoro ecosystem. The study was motivated to test the following hypotheses: 1) in a given group, the sex ratio of males to females with calves is related to group size; 2) group size affects vigilance behaviour; 3) illegal hunting influences group size and vigilance behaviour; and 4) group size differs in different habitats, being larger in woodlands during the wet season and in

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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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Necks and networks: a preliminary study of population structure in the reticulated giraffe (Giraffa camelopardalis reticulata de Winston)

This paper describes a method of scoring the neck pattern of reticulated giraffes as a simple code that can be searched for in an Excel spreadsheet. This enables several hundred individual giraffe to be recognized and repeatedly found within a database. Possible sources of error are described and quantified. Data on group size, dispersal within groups and social network patterns are described. The latter is facilitated using Ucinet 6.85 for Windows, a software package that helps to visualize and analyse

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Factors affecting group size and vigilance behaviour of Maasai Giraffe (Giraffa Camelopardalis Tippelskirchi) in the Serengeti Ngorongoro Ecosystem, Tanzania

This study investigates factors affecting group sizes of Maasai giraffe (Giraffa camelopardalis tippelskirchi) in the Serengeti-Ngorongoro ecosystem, northern Tanzania. Various studies on giraffes have been conducted in the past, but none has investigated factors affecting giraffes’ group size and vigilance behavior in this vast ecosystem. As a result, I was motivated to investigate the following hypotheses: 1) in a given group, the sex ratio of males to females with calves is related to group size; 2) group size affects vigilance

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