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Author Krueger, K.; Flauger, B.; Farmer, K.; Hemelrijk, C. url  doi
openurl 
  Title Movement initiation in groups of feral horses Type Journal Article
  Year 2014 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 103 Issue Pages 91-101  
  Keywords Horse; Equus ferus caballus; Distributed leadership; Herding; Departure; Rank  
  Abstract Abstract Herds of ungulates, flocks of birds, swarms of insects and schools of fish move in coordinated groups. Computer models show that only one or very few animals are needed to initiate and direct movement. To investigate initiation mechanisms further, we studied two ways in which movement can be initiated in feral horses: herding, and departure from the group. We examined traits affecting the likelihood of a horse initiating movement i.e. social rank, affiliative relationships, spatial position, and social network. We also investigated whether group members join a movement in dominance rank order. Our results show that whereas herding is exclusive to alpha males, any group member may initiate movement by departure. Social bonds, the number of animals interacted with, and the spatial position were not significantly associated with movement initiation. We did not find movement initiation by departure to be exclusive to any type of individual. Instead we find evidence for a limited form of distributed leadership, with higher ranking animals being followed more often.  
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  ISSN 0376-6357 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5738  
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Author Kurvers, R.H.J.M.; Eijkelenkamp, B.; van Oers, K.; van Lith, B.; van Wieren, S.E.; Ydenberg, R.C.; Prins, H.H.T. url  doi
openurl 
  Title Personality differences explain leadership in barnacle geese Type Journal Article
  Year 2009 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 78 Issue 2 Pages 447-453  
  Keywords barnacle goose; boldness; Branta leucopsis; group behaviour; leadership; personality  
  Abstract Personality in animal behaviour describes the observation that behavioural differences between individuals are consistent over time and context. Studies of group-living animals show that movement order among individuals is also consistent over time and context, suggesting that some individuals lead and others follow. However, the relationship between leadership and personality traits is poorly studied. We measured several personality traits and leadership of individual barnacle geese, Branta leucopsis. We measured body size and scored the dominance of individuals living in a stable group situation before subjecting them to an open-field test, an activity test, a novel-object test, and a leadership test in which the order of the movement of individuals in pairs towards a feeding patch was scored. We found high repeatability for activity and novel-object scores over time. Leadership was strongly correlated with novel-object score but not with dominance rank, activity or exploration in an open field. These results provide evidence that leadership is closely related to some aspects of personality. Interestingly, an individual's arrival at the food patch was affected not only by the novel-object score of the focal individual, but also by the novel-object score of the companion individual, indicating that movement patterns of individuals living in groups are affected by the personality traits of other group members and suggesting that movement patterns of a group may be shaped by the mix of personality types present in the group.  
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  ISSN 0003-3472 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5172  
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Author Levin, L.E.; Grillet, M.E. openurl 
  Title [Diversified leadership: a social solution of problems in schools of fish] Type Journal Article
  Year 1988 Publication Acta Cientifica Venezolana Abbreviated Journal Acta Cient Venez  
  Volume 39 Issue 2 Pages 175-180  
  Keywords Animals; Fishes; *Leadership; Reversal Learning/*physiology; *Social Behavior  
  Abstract  
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  Language Spanish Summary Language Original Title Liderazgo diversificado: una solucion social de problemas en el cardumen  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0001-5504 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:3251383 Approved no  
  Call Number Serial 2045  
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Author Mech L.D. url  openurl
  Title Leadership in Wolf, Canis lupus, Packs. Type Journal Article
  Year 2000 Publication Canadian Field-Naturalist Abbreviated Journal Can Field Nat  
  Volume 114 Issue 2 Pages 259-263  
  Keywords Wolf, Canis lupus, leadership, behavior, foraging, movements, pup care, provisioning, sociality, reproduction, breeding, Northwest Territories.  
  Abstract I examine leadership in Wolf (Canis lupus) packs based on published observations and data gathered during summers from 1986 to 1998 studying a free-ranging pack of Wolves on Ellesmere Island that were habituated to my presence. The breeding male tended to initiate activities associated with foraging and travel, and the breeding female to initiate, and predominate in, pup care and protection. However, there was considerable overlap and interaction during these activities such that leadership could be considered a joint function. In packs with multiple breeders, quantitative information about leadership is needed.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4688  
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Author Meese, G.B.; Ewbank, R. openurl 
  Title Exploratory behaviour and leadership in the domesticated pig Type Journal Article
  Year 1973 Publication The British Veterinary Journal Abbreviated Journal Br. Vet. J.  
  Volume 129 Issue 3 Pages 251-259  
  Keywords Animals; Animals, Domestic; Behavior, Animal; Castration; *Exploratory Behavior; Female; *Leadership; Male; Sex Factors; Social Behavior; *Swine  
  Abstract  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0007-1935 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:4728194 Approved no  
  Call Number Serial 2052  
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Author Menzel, E.W.J. openurl 
  Title Communication about the environment in a group of young chimpanzees Type Journal Article
  Year 1971 Publication Folia Primatologica; International Journal of Primatology Abbreviated Journal Folia Primatol (Basel)  
  Volume 15 Issue 3 Pages 220-232  
  Keywords *Animal Communication; Animals; Environment; Fear; Leadership; *Pan troglodytes; Problem Solving; Social Behavior; Species Specificity; Vocalization, Animal  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0015-5713 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:5120654 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4184  
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Author Mitman, G. openurl 
  Title Dominance, leadership, and aggression: animal behavior studies during the Second World War Type Journal Article
  Year 1990 Publication Journal of the History of the Behavioral Sciences Abbreviated Journal J Hist Behav Sci  
  Volume 26 Issue 1 Pages 3-16  
  Keywords *Aggression; Animals; Behavior, Animal; *Dominance-Subordination; History, 20th Century; *Leadership; Political Systems; *Social Dominance; United States  
  Abstract During the decade surrounding the Second World War, an extensive literature on the biological and psychological basis of aggression surfaced in America, a literature that in general emphasized the significance of learning and environment in the origins of aggressive behavior. Focusing on the animal behavior research of Warder Clyde Allee and John Paul Scott, this paper examines the complex interplay among conceptual, institutional, and societal forces that created and shaped a discourse on the subjects of aggression, dominance, and leadership within the context of World War II. The distinctions made between sexual and social dominance during this period, distinctions accentuated by the threat of totalitarianism abroad, and the varying ways that interpretations of behavior could be negotiated attests to the multiplicity of interactions that influence the development of scientific research.  
  Address University of Wisconsin  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-5061 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:2405050 Approved no  
  Call Number Serial 2044  
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Author Mori, A.; Iwamoto, T.; Bekele, A. doi  openurl
  Title A case of infanticide in a recently found gelada population in Arsi, Ethiopia Type Journal Article
  Year 1997 Publication Primates Abbreviated Journal Primates  
  Volume 38 Issue 1 Pages 79-88  
  Keywords heropithecus gelada – Infanticide – Male takeover – Leadership change  
  Abstract Abstract  There have been no reports of infanticide in wild gelada baboons and it has been argued that infanticide is not necessary in geladas, since the birth interval of female gelada can be shortened after takeover of a unit by a new leader male without infanticide. However, we observed an instance of infanticide in a newly-found wild gelada population in the Arsi Region of Ethiopia. After a leader male of the unit was severely wounded by a leopard attack, he was quite weakened. The second male of the unit, a young adult male, became the leader of the unit three weeks later, but the former leader continued to stay in the unit as a second male. After a week, two other adult males joined the unit which, therefore, came to include four adult males. The infanticide took place nine days later. The perpetrator was one of the immigrant males and he showed great interest in the mother of the unweaned victim infant. Although the perpetrator copulated with her after the infanticide, the usurper was found to own all three adult females after two weeks following the infanticide; i.e. the perpetrator could not own any female. The wounded former leader showed conspicuous protective behavior towards the victim's mother and the dead infant. One possible explanation for the occurrence of infanticide in this population of geladas is as follows. Gelada males in this area may be able to join units more easily to form multi-male units but then have shorter tenure in the units. Facing the unstable condition of units, they may sometimes engage in infanticide to increase their breeding opportunities, even before becoming a leader.  
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  Notes Approved no  
  Call Number Serial 2061  
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Author Mori, U. openurl 
  Title Ecological and sociological studies of gelada baboons. Individual relationships within a unit Type Journal Article
  Year 1979 Publication Contributions to Primatology Abbreviated Journal Contrib Primatol  
  Volume 16 Issue Pages 93-124  
  Keywords Animals; Female; Grooming; *Haplorhini; *Leadership; Male; Paternal Behavior; *Social Behavior; *Theropithecus  
  Abstract  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0301-4231 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:101345 Approved no  
  Call Number Serial 2046  
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Author Mori, U. openurl 
  Title Ecological and sociological studies of gelada baboons. Inter-unit relationships Type Journal Article
  Year 1979 Publication Contributions to Primatology Abbreviated Journal Contrib Primatol  
  Volume 16 Issue Pages 83-92  
  Keywords Animals; Female; *Haplorhini; Leadership; Sex Factors; *Social Behavior; Social Distance; *Theropithecus  
  Abstract  
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  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0301-4231 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:101344 Approved no  
  Call Number Serial 2047  
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