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Sparring dynamics and individual laterality in male South African giraffes

Sparring by male giraffes has been commonly reported since its first description in 1958 and is believed to play a role in establishing male dominance hierarchies. However, despite being often documented, quantitative investigations of sparring behaviour are currently lacking. Here, we investigate the factors affecting the frequency, duration and intensity of sparring bouts in a population of giraffes Giraffa camelopardalis giraffa living on a private fenced reserve in Limpopo, South Africa. We show that sparring bouts were most frequently observed

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Dynamics of a Socially and Spatially Structured Giraffe Population in a Human-Natural Landscape

Sociality involves a constant trade-off between fitness benefits and costs of living in groups, and this trade-off can be influenced by the social and ecological environment in which individuals live. In this PhD I explored socioecological factors underlying the social and spatial population structure and dynamics of a large tropical herbivore with a highly fission-fusion social system, the giraffe (Giraffa camelopardalis). Using a dataset of more than 3,000 uniquely identified individuals collected over a period of 8 years in the

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Aspects of Female Giraffe Reproduction: Review and Update

Introduction Giraffes belong to Africa´s iconic mammals and are amongst the most popular zoo animals. 0However, few visitors realize that there are at least six genetically distinct (sub) species of giraffes, of which two are already classified endangered due to habitat loss and fragmentation. Each of these endangered giraffe populations count less than a thousand individuals in the wild. Therefore, the role of zoological facilities for the conservation of giraffes is increasingly important. For successful reproductive management of our captive

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Maternal Behaviour in Giraffes (Giraffa camelopardalis)

Allomaternal care is one of the most interesting types of cooperation among females. Its most extreme form is allonursing, nursing of a non-filial young, which is still not completely understood, even though many hypotheses have been postulated. This type of cooperation among giraffes had not been expected for long time. This was based on the initial opinion that giraffes do not have social system and form only weak social bonds. However, my bachelor and master theses showed high occurrence of

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Social Behavior and communication in a herd of captive giraffe

Data on wild giraffe herds have often been interpreted as a random association of individuals, but the extent to which giraffe have a more complex social structure may have been overlooked. The focus of this dissertation is to investigate patterns of social relationships among individual giraffe. Social interaction and association (proximity and nearest neighbor) distributions among 6 female Rothschild’s giraffe in a captive herd at the San Diego Wild Animal Park were analyzed to identify and describe patterns of social

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A study on the social organisation of the Southern giraffe (Giraffa camelopardalis giraffa)

In this study, I have investigated the social structure of a population of the Southern giraffe (Giraffa camelopardalis giraffa) residing in Pilanesberg National Park, South Africa. To do so, association data was collected using photo-identification to recognise individual giraffes. Within the study period between October 27th 2012 and January 25th 2013, 257 groups of giraffes were encountered, and the population number was estimated to be at least 173 giraffes residing within the 513 km2 area. For the analysis of the

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Giraffe Social Behaviour

Many features recommend the giraffe (Giraffa camelopardalis) for behavioural study: it is big, abundant, conspicuous, active by day, reasonably trusting of people, deliberate, and the best self-marked animal in existence. Surprisingly, its social behaviour has been largely neglected. We studied giraffe exclusively for the following periods: February–March, 1975 and January–December, 1977 in the Serengeti National Park, July 1979–June 1980 in the Arusha National Park, and January–October, 1981 in the Tarangire National Park, totalling 3264 hours of observation directed principally to

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Social influences on vigilance behaviour in giraffes, Giraffa camelopardalis

Vigilance in ungulates is considered to have a predominantly antipredator function, with the frequency and duration of scans per individual decreasing with increasing group size. Social influences on vigilance scans have been overlooked in studies on ungulates, although studies in primates and birds show that conspecific scans are important determinants of vigilance behaviour. We investigated group size effects in giraffes and examined social influences on their scanning behaviour, as well as the influence of feeding posture. We found that group

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Giraffe Cow-Calf Relationships and Social Development of the Calf in the Serengeti

Activity patterns of giraffe calves and calf-mother distances have been studied as functions of age and sex of the calf in the Serengeti National Park, Tanzania. Particular attention was paid to the nature of the cow-calf bond, suckling behavior, the social development of the calf, relationships between calves and between mother-calf pairs in calf groups, and the anti-predator behavior of mother and calf.

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Giraffe mothers in East Africa linger for days near the remains of their dead calves

Repeated investigation of dead young or carrying of corpses has been observed in several mammalian taxa, notably primates [e.g. yellow baboons (Papio cynocephalus): Altmann, 1980; chimpanzees (Pan troglodytes): Goodall, 1986; Matsuzawa, 1997; Biro et al., 2010; ring-tailed lemurs (Lemur catta): Nakamichi, Koyama & Jolly, 1996; Yunnan snub-nosed monkeys (Rhinopithecus bieti): Li et al., 2012), dolphins (Tursiops spp.) (Tayler & Saayman, 1972; Harzen & Dos Santos, 1992) and elephants (Loxodonta africana) (Moss, 1976; Poole, 1996), and was recently also described in

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