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Author |
Kaminski, J.; Call, J.; Tomasello, M. |
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Title |
Goats' behaviour in a competitive food paradigm: Evidence for perspective taking? |
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Journal Article |
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Year |
2006 |
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Behaviour |
Abbreviated Journal |
Behaviour |
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143 |
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1341-1356 |
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SOCIAL COGNITION; GOATS; VISUAL PERSPECTIVE TAKING; COMPARATIVE COGNITION |
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Abstract |
Many mammalian species are highly social, creating intra-group competition for such things as food and mates. Recent research with nonhuman primates indicates that in competitive situations individuals know what other individuals can and cannot see, and they use this knowledge to their advantage in various ways. In the current study, we extended these findings to a non-primate species, the domestic goat, using the conspecific competition paradigm developed by Hare et al. (2000). Like chimpanzees and some other nonhuman primates, goats live in fission-fusion societies, form coalitions and alliances, and are known to reconcile after fights. In the current study, a dominant and a subordinate individual competed for food, but in some cases the subordinate could see things that the dominant could not. In the condition where dominants could only see one piece of food but subordinates could see both, subordinates' preferences depended on whether they received aggression from the dominant animal during the experiment. Subjects who received aggression preferred the hidden over the visible piece of food, whereas subjects who never received aggression significantly preferred the visible piece. By using this strategy, goats who had not received aggression got significantly more food than the other goats. Such complex social interactions may be supported by cognitive mechanisms similar to those of chimpanzees. We discuss these results in the context of current issues in mammalian cognition and socio-ecology. |
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refbase @ user @ |
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3430 |
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Author |
Boinski, S. |
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Dispersal patterns among three species of squirrel monkeys (Saimiri oerstedii, S. boliviensis and S. sciureus): III. Cognition |
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2005 |
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Behaviour |
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Behaviour |
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142 |
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679-699 |
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refbase @ user @ |
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3509 |
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Dow, M.; Ewing, A.W.; Sutherland, I. |
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Title |
Studies on the behaviour of cyprinodont fish. III. The temporal patterning of aggression in Aphyosemion striatum (Boulenger) |
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Journal Article |
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Year |
1976 |
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Behaviour |
Abbreviated Journal |
Behaviour |
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59 |
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3-4 |
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252-268 |
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*Aggression; Animals; *Behavior, Animal; Dominance-Subordination; *Fishes; Humans; Individuality; *Killifishes; Male; Time Factors |
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0005-7959 |
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PMID:1035107 |
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Equine Behaviour @ team @ |
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4151 |
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Bergmann, H.H.; Klaus, S.; Muller, F.; Wiesner, J. |
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[Individuality and type specificity in the songs of a population of hazel grouse (Bonasa bonasia bonasia L., Tetraoninae, Phasianidae)] |
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Journal Article |
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1975 |
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Behaviour |
Abbreviated Journal |
Behaviour |
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55 |
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1-2 |
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94-114 |
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Animals; *Birds; Female; *Individuality; Male; Time Factors; *Vocalization, Animal |
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German |
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Individualitat und Artspezifitat in den Gesangsstrophen einer Population des Haselhuhns (Bonasa bonasia bonasia L., Tetraoninae, Phasianidae) |
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0005-7959 |
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PMID:1191217 |
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Equine Behaviour @ team @ |
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4152 |
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Jensen, G.D.; Gordon, B.N.; Wolfheim, J. |
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Title |
Nursing behavior in infant monkeys: a sequence analysis |
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1975 |
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Behaviour |
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Behaviour |
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55 |
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1-2 |
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115-127 |
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Animals; Dependency (Psychology); *Feeding Behavior; Female; *Macaca; Male; Sensory Deprivation; Social Behavior; Spatial Behavior |
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0005-7959 |
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PMID:1191212 |
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Equine Behaviour @ team @ |
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4153 |
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Salzen, E.A.; Cornell, J.M. |
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Title |
Self-perception and species recognition in birds |
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Journal Article |
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1968 |
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Behaviour |
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Behaviour |
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30 |
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1 |
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44-65 |
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Animals; Birds; Color Perception; Discrimination Learning; Generalization, Response; Imprinting (Psychology); *Perception; *Self Concept; Social Isolation; *Species Specificity; Water |
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0005-7959 |
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PMID:5644775 |
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Equine Behaviour @ team @ |
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4154 |
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Author |
Jarman, P.J . |
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Title |
The social behaviour of antelope in relation to their ecology |
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Journal Article |
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1974 |
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Behaviour |
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Behaviour |
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48 |
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1-4 |
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213-267 |
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The types of social organisation displayed by the African antelope species have been assigned in this paper to five classes, distinguished largely by the strategies used by the reproductively active males in securing mating rights, and the effects of those strategies on other social castes. The paper attempts to show that these strategies are appropriate to each class because of the effects of other, ecological, aspects of their ways of life. The paper describes different feeding styles among antelope, in terms of selection of food items and coverage of home ranges. It argues that these feeding styles bear a relationship to maximum group size of feeding animals through the influence of dispersion of food items upon group cohesion. The feeding styles also bear a relationship to body size and to habitat choice, both of which influence the antelope species' antipredator behaviour. Thus feeding style is related to anti-predator behaviour which, in many species, influences minimum group size. Group size and the pattern of movement over the annual home range affect the likelihood of females being found in a given place at a given time, and it is this likelihood which, to a large extent, determines the kind of strategy a male must employ to achieve mating rights. The effects of the different strategies employed by males can be seen in such aspects of each species' biology as sexual dimorphism, adult sex ratio, and differential distribution of the sexes. |
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Equine Behaviour @ team @ |
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4264 |
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Barette, C.; Vandal, D. |
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Title |
Social rank, dominance, antler size, and access to food in snow-bound wild woodland caribou |
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1986 |
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Behaviour |
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Behaviour |
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97 |
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1-2 |
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118-146 |
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Canada; Quebec; Artiodactyla; Social dominance; Feeding behavior; Morphology; Antler; Rangifer tarandus; North America; America; Ungulata; Mammalia; Vertebrata |
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Abstract |
We spent two winters studying the social behaviour of wild woodland caribou (Rangifer tarandus caribou) at a time when their main food (ground lichens; Cladina sp.) is available only at snow craters dug by the animals. The competition for access to such craters was severe, the animals constantly trying to take over the craters of others. During a two-month period when a group maintained a constant size (20) and composition (all age-sex classes represented), we could rank the animals in a rather linear dominance hierarchy (Landau's index = 0.87). Rank was correlated with access to resources, percent of time spent active, and percent of time feeding in craters. It was also correlated with age and antler size. However, rank is not an attribute of individuals, but of a relationship between individuals. As such it is only an intervening variable between physical attributes and access to resources, a variable whose value has meaning only within a given group. Among the three attributes studied (age, sex, antler size), the latter was by far the best predictor of the occurrence and outcome of interactions. Between two individuals within any of the three age-sex classes studied (adult and yearling males and adult females), the one with larger antlers initiated significantly more often, escalated its aggression (to the point of hitting the target) less often, and enjoyed a higher success rate in obtaining resources. When their antlers were larger than those of an adult male target (i.e. males that had shed their antlers), adult females won almost all their interactions with adult males even though they escalated only one fourth of them. This clarifies the long-standing speculation that female caribou have antlers and shed them later than males, in order to overcome their sexual handicap in competition for food in the winter. We conclude that the link between rank and dominance of an individual on one hand, and some of its attributes on the other (e.g. sex, age, weight, antler size) is fundamentally realized by the animal itself through its active preference for targets it is likely to beat, i.e. targets with smaller antlers. |
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Equine Behaviour @ team @ |
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4269 |
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Schulte, N.; Klingel, H. |
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Title |
Herd Structure, Leadership, Dominance and Site Attachment of the Camel, Camelus Dromedarius |
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1991 |
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Behaviour |
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Behaviour |
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118 |
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1-2 |
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103-114 |
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Social structure and relationships in a herd of captive camels were studied in Kenya. During day and night the herd split up irrespective of kinship. Partner preferences existed only in those camels who had previously been kept in a small group separated from the herd. Dominance relationships are anonymous with four levels: a) dominant breeding bulls, b) females and bachelors, c) subadults, and d) calves. No stable leadership was observed, but individual preferences in the walking order existed when the camels left and entered the enclosure. During the night most camels showed an amazing attachment to a particular resting site; in a new boma they used corresponding sites. During moon nights activity was greatly increased. |
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Equine Behaviour @ team @ |
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4683 |
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Altmann, J. |
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Title |
Observational Study of Behavior: Sampling Methods |
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1974 |
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Behaviour |
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Behaviour |
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49 |
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3-4 |
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227-266 |
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Seven major types of sampling for observational studies of social behavior have been found in the literature. These methods differ considerably in their suitability for providing unbiased data of various kinds. Below is a summary of the major recommended uses of each technique: In this paper, I have tried to point out the major strengths and weaknesses of each sampling method. Some methods are intrinsically biased with respect to many variables, others to fewer. In choosing a sampling method the main question is whether the procedure results in a biased sample of the variables under study. A method can produce a biased sample directly, as a result of intrinsic bias with respect to a study variable, or secondarily due to some degree of dependence (correlation) between the study variable and a directly-biased variable. In order to choose a sampling technique, the observer needs to consider carefully the characteristics of behavior and social interactions that are relevant to the study population and the research questions at hand. In most studies one will not have adequate empirical knowledge of the dependencies between relevant variables. Under the circumstances, the observer should avoid intrinsic biases to whatever extent possible, in particular those that direcly affect the variables under study. Finally, it will often be possible to use more than one sampling method in a study. Such samples can be taken successively or, under favorable conditions, even concurrently. For example, we have found it possible to take Instantaneous Samples of the identities and distances of nearest neighbors of a focal individual at five or ten minute intervals during Focal-Animal (behavior) Samples on that individual. Often during Focal-Animal Sampling one can also record All Occurrences of Some Behaviors, for the whole social group, for categories of conspicuous behavior, such as predation, intergroup contact, drinking, and so on. The extent to which concurrent multiple sampling is feasible will depend very much on the behavior categories and rate of occurrence, the observational conditions, etc. Where feasible, such multiple sampling can greatly aid in the efficient use of research time. |
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Equine Behaviour @ team @ |
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4684 |
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