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Author (up) Altmann, J.
Title Observational Study of Behavior: Sampling Methods Type Journal Article
Year 1974 Publication Behaviour Abbreviated Journal Behaviour
Volume 49 Issue 3-4 Pages 227-266
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Abstract 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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Call Number Equine Behaviour @ team @ Serial 4684
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Author (up) Appleby, M.C.
Title Social Rank and Food Access in Red Deer Stags Type Journal Article
Year 1980 Publication Behaviour Abbreviated Journal Behaviour
Volume 74 Issue Pages 294-309
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Abstract The behaviour of a free-living group of male red deer (Cervus elaphus L.) on the Isle of Rhum, Scotland, was studied throughout the year to investigate the relations between social dominance and food access. The study is based on the collection of agonistic interactions between members of the study group outside the rutting season. Analysis of these confirmed that dyadic dominance relationships summate to a very clear agonistic hierarchy, while seasonal changes in frequency and type of interactions suggested that rank in the hierarchy may affect access to food through direct feeding interference. This would constitute a selective advantage of the acquisition of high rank. A behaviour pattern in which a stag displaces a subordinate and takes over his feeding-site is proposed as a mechanism of direct feeding interference. It occurs throughout the year, but with a frequency closely related to changes in food availability and quality. The proportion of such interactions that an individual wins is related to his rank, so advantages gained from this behaviour would primarily benefit high-ranking stags. These are likely to consist of improved body condition and winter survival. The importance of high rank in obtaining access to limited food was supported by the results of a simple experiment providing a small area of fertilized grass. Most of the grazing in the area was due to the highest-ranking stag present at any time.
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Call Number Equine Behaviour @ team @ Serial 4860
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Author (up) Barette, C.; Vandal, D.
Title Social rank, dominance, antler size, and access to food in snow-bound wild woodland caribou Type Journal Article
Year 1986 Publication Behaviour Abbreviated Journal Behaviour
Volume 97 Issue 1-2 Pages 118-146
Keywords Canada; Quebec; Artiodactyla; Social dominance; Feeding behavior; Morphology; Antler; Rangifer tarandus; North America; America; Ungulata; Mammalia; Vertebrata
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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Call Number Equine Behaviour @ team @ Serial 4269
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Author (up) Beauchamp, G.
Title Individual Differences In Activity And Exploration Influence Leadership In Pairs Of Foraging Zebra Finches Type Journal Article
Year 2000 Publication Behaviour Abbreviated Journal Behaviour
Volume 137 Issue Pages 301-314
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Abstract This study investigated the role of dominance and level of activity and exploration on leadership in zebra finches (Taenopygia guttata) searching for food. In pairs of zebra finches fairly matched in size and that experienced the same level of food deprivation, the same bird consistently reached first one foraging patch over several trials. The same pattern of arrival to food occurred when resources were provided in two distant patches available concurrently, a situation that would potentially allow subordinates a greater access to resources. In further testing, the formation of new pairs with the same birds led to several changes in leadership, indicating that leadership is not an absolute feature. The member of a pair that proved to be the most active and exploratory during independent, solitary trials became the leader in nearly all pairs tested. The same pattern held true in newly rearranged pairs where individuals often experienced changes in dominance status. Dominance failed to be associated with leadership in all tests. The results suggest that in a relatively egalitarian species, level of activity and exploration may be a stronger predictor of leadership than dominance.
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Call Number Equine Behaviour @ team @ Serial 4698
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Author (up) Bergmann, H.H.; Klaus, S.; Muller, F.; Wiesner, J.
Title [Individuality and type specificity in the songs of a population of hazel grouse (Bonasa bonasia bonasia L., Tetraoninae, Phasianidae)] Type Journal Article
Year 1975 Publication Behaviour Abbreviated Journal Behaviour
Volume 55 Issue 1-2 Pages 94-114
Keywords Animals; *Birds; Female; *Individuality; Male; Time Factors; *Vocalization, Animal
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Language German Summary Language Original Title Individualitat und Artspezifitat in den Gesangsstrophen einer Population des Haselhuhns (Bonasa bonasia bonasia L., Tetraoninae, Phasianidae)
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Notes PMID:1191217 Approved no
Call Number Equine Behaviour @ team @ Serial 4152
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Author (up) Boinski, S.
Title Dispersal patterns among three species of squirrel monkeys (Saimiri oerstedii, S. boliviensis and S. sciureus): III. Cognition Type Journal Article
Year 2005 Publication Behaviour Abbreviated Journal Behaviour
Volume 142 Issue Pages 679-699
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Call Number refbase @ user @ Serial 3509
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Author (up) Boy V, D.P.
Title Time-budgets of Camargue horses, I. Development changes in the time-budgets of foals Type Journal Article
Year 1979 Publication Abbreviated Journal Behaviour
Volume 71 Issue Pages 187-202
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 966
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Author (up) Boy, V.; Duncan, P.
Title Time-budgets of Camargue horses. I. Developmental changes in the time-budgets of foals. Type Journal Article
Year 1979 Publication Behaviour Abbreviated Journal Behaviour
Volume 71 Issue Pages 187-201
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Notes Approved no
Call Number Serial 1803
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Author (up) Burger, J.; Gochfeld.
Title Vigilance in African mammals: differences among mothers, other females, and males. Type Journal Article
Year 1994 Publication Behaviour Abbreviated Journal Behaviour
Volume 131 Issue 3-4 Pages 153-169
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Call Number Equine Behaviour @ team @ Serial 2252
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Author (up) Chase, I.D.; Tovey, C.; Murch, P.
Title Two's Company, Three's a Crowd: Differences in Dominance Relationships in Isolated Versus Socially Embedded Pairs of Fish Type Journal Article
Year 2003 Publication Behaviour Abbreviated Journal Behaviour
Volume 140 Issue 10 Pages 1193-1217
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Abstract We performed experiments with cichlid fish to test whether several basic aspects of dominance were the same in isolated pairs as in pairs within a social group of three or four. We found that the social context, whether a pair was isolated or within a group, strongly affected the basic properties of dominance relationships. In particular, the stability of relationships over time, the replication of relationships in successive meetings, and the extent of the loser effect were all significantly less in socially embedded pairs than in isolated pairs. We found no significant winner effect in either isolated or socially embedded pairs. These findings call into question many current approaches to dominance that do not consider social context as an important factor in dominance behavior. These findings also cast serious doubt on the validity of empirical and theoretical approaches based on dyadic interactions. Among these approaches are game theoretic models for the evolution of aggressive behavior, experimental designs evaluating how asymmetries in attributes influence the outcome of dominance
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Notes Approved no
Call Number refbase @ user @ Serial 857
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