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Author Sherwin, C.M.; Johnson, K.G. url  doi
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  Title The influence of social factors on the use of shade by sheep Type Journal Article
  Year 1987 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 18 Issue 2 Pages 143-155  
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  Abstract Individual differences in shading behaviour within a flock of sheep could be due to differences in thermoregulatory capabilities or to the influence of social factors. The possible influence of social factors on shade-use is examined in this paper. Two measures of dominance were made on 39 Merino wethers. These were based on the hierarchy determined by butting during feeding and on priority of access to limited feed. Leadership was also assessed while driving the sheep to a woolshed and as the sheep entered weighing scales. These behavioural traits were compared with leadership to shade and shade-use observed on 9 days during summer in a small pastureless enclosure containing natural shade. Maximum ambient temperature on these 9 days varied between 29.0 and 39.5[degree sign]C. All behavioural traits examined were significantly repeatable. The two dominance ranks were negatively correlated (P<0.05). The butting hierarchy was correlated with shading behaviour; those sheep that butted the larger proportion of the flock were seen to shade for longer periods of time (P=0.05). This relationship became more significant as environmental temperature increased. Significant (P<0.05) differences in the amount of time each sheep spent shading were evident throughout the flock, but in particular seven individuals shaded much less than others. Shade-use increased in hot weather and was slightly more strongly correlated with radiation load than with air temperature. The non-shading leadership ranks were related neither to each other nor to the leadership to shade. However, the sheep that moved to shade first remained there longest (P<0.05). Reduced motivation to feed did not appear to explain early movement to shade. Few overtly aggressive or other interactions between animals were seen to be associated with movements to or within shade. Nonetheless, the results indicate that social forces do exert some influence on shade-use.  
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  Call Number Equine Behaviour @ team @ room B 3.029 Serial 2037  
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Author Syme, G.J.; Syme, L.A. url  openurl
  Title The concept of spatial leadership in farm animals: An experiment with sheep Type Journal Article
  Year 1975 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 23 Issue Part 4 Pages 921-925  
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  Abstract The concept of spatial leadership as applied to farm animals is discussed with particular emphasis on methodological problems. Using three experimental procedures forced spatial leadership orders were measured in a group of Romney ewes. Comparisons between orders showed the effects of both the different experimental tasks and the social context on leadership structure. Both these variables were found to affect the orders obtained. The results are interpreted in terms of the utility of the concept of spatial leadership in domestic animals and the necessity for more systematic procedural investigations in this area.  
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  Notes Approved no  
  Call Number Serial 2039  
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Author Reebs S.G. doi  openurl
  Title Can a minority of informed leaders determine the foraging movements of a fish shoal? Type Journal Article
  Year 2000 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 59 Issue 2 Pages 403-409  
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  Abstract There is no information on whether the daily foraging movements of fish shoals are the result of chance, the collective will of all shoalmates, or the leadership of a few individuals. This study tested the latter possibility. Shoals of 12 golden shiners, Notemigonus crysoleucas, were trained to expect food around midday in one of the brightly lit corners of their tank. They displayed daily food-anticipatory activity by leaving the shady area of their tank and spending more and more time in the food corner up to the normal time of feeding. Past this normal time they remained in the shade, even on test days when no food was delivered. Most of these experienced individuals were then replaced by naive ones. The resulting ratio of experienced:naive fish could be 5:7, 3:9 or 1:11. On their own, na?ve individuals would normally spend the whole day in the shade, but in all tests the experienced individual(s) were able to entrain these more numerous naive fish out of the shade and into the brightly lit food corner at the right time of day. Entrainment was stronger in the 5:7 than in the 1:11 experiment. The test shoals never split up and were always led by the same fish, presumably the experienced individuals. These results indicate that in a strongly gregarious species, such as the golden shiner, a minority of informed individuals can lead a shoal to food, either through social facilitation of foraging movements or by eliciting following behaviour. Copyright 2000 The Association for the Study of Animal Behaviour  
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  Call Number Serial 2068  
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Author Beauchamp, G.; Kacelnik, A. url  doi
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  Title Effects of the knowledge of partners on learning rates in zebra finches Taeniopygia guttata Type Journal Article
  Year 1991 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 41 Issue 2 Pages 247-253  
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  Abstract Many interpretations of the adaptive value of group living involve tranfer of knowledge. However, according to learning theory, being in a pair with a knowledgeable partner can have paradoxical consequences. Obtaining food by following a skilled companion may reduce the ability of naive individuals to learn about clues that signal the occurrence of food. This study examined the relation between learning and following in paris of zebra finches. Knowledgeable partners were trained to obtain food from a computer-controlled dispenser by using the information provided by a signal. For non-knowledgeable partners, the signal was irrelevant and could not be used to predict foraging opportunities. The rate of learning about the signal by naive birds that shared the experience of either knowledgeable or nonknowledgeable tutors was then examined. Naive birds learned more slowly as a result of being in a pair with a knowledgeable than a non-knowledgeable partner. Well-informed mates acted as a reliable cue to predict foraging opportunities, and thus overshadowed the independent signal. The knowledge of a partner influences learning rates in naive individuals, but in the opposite direction to that predicted by earlier accounts of learning in social contexts.  
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  Call Number Serial 2115  
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Author Powell, G.V.N. url  openurl
  Title Experimental analysis of the social value of flocking by starlings (Sturnus vulgaris) in relation to predation and foraging Type Journal Article
  Year 1974 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 22 Issue 2 Pages 501-505  
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  Abstract In groups of ten, indidual starlings, Sturnus vulgaris, spent significantly less time in surveillance than did individuals in smaller groups and responded more quickly than single birds to a flying model hawk. Captive starlings in flocks reduce their individual surveillance efforts, but their combined efforts still enable them to be more effective than single birds in the detection of predators. Foraging behaviour of flocks was observed by placing single starlings with groups of tricoloured blackbirds, Agelaius tricolor; the starlings reduced the time they devoted to surveillance at the same rate as if they were with other starlings.  
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  Call Number Serial 2147  
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Author Heyes, C.; Galef, B.G. (eds) isbn  openurl
  Title Social learning in animals: the roots of culture Type Book Whole
  Year 1996 Publication Abbreviated Journal  
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  Publisher Academic Press, Inc. Place of Publication San Diego, CA Editor Heyes, C. ; Galef, B.G.  
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  ISSN ISBN 978-0122739651 Medium  
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  Call Number Equine Behaviour @ team @ home Serial 2174  
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Author Syme, G.J.; Pollard, J.S.; Syme, L.A.; Reid, R.M. url  openurl
  Title An analysis of the limited access measure of social dominance in rats Type Journal Article
  Year 1974 Publication Abbreviated Journal  
  Volume 22 Issue 2 Pages 486-500  
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  Abstract The limited access situation in which only one of two or more subjects can gain access to a reward during a restricted time-period is an accepted measure of dominance in the rat. This study attempts to validate the technique by establishing the relationship between individual and competitive performance in order to determine whether `priority of access' has been measured. The generality of the competitive orders is examined by altering the competitive response while retaining the same reward. In view of the data collected for both time and weight-gain measures in food and water competition it is doubtful whether the limited access competitive technique can be considered a valid measure of dominance for the laboratory rat.  
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  Call Number Equine Behaviour @ team @ Serial 2187  
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Author Syme, G.J. url  openurl
  Title Competitive orders as measures of social dominance Type Journal Article
  Year 1974 Publication Abbreviated Journal  
  Volume 22 Issue Part 4 Pages 931-940  
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  Abstract The use of competitive orders as measures of social dominance is examined, the conclusion being that such use is based on the assumption of the unidimensionality of social dominance. Evidence is presented to show that this is not always the case. Consequently it is suggested that each competitive order must be validated in terms of its measurement of priority of access and response requirements (internal validity) as well as its generality (external validity) before it can be regarded as a dominance measure. Problems of the validity of aggression orders as measures of social dominance are also examined along with their relationship to competitive orders.  
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  Call Number Equine Behaviour @ team @ Serial 2188  
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Author Anderson, G.D.; Talbot, L.M. url  openurl
  Title Soil factors affecting distribution of the grassland types and their utilization by wild animals on the Serengeti Plains Type Journal Article
  Year 1965 Publication Journal of Ecology Abbreviated Journal J Ecol  
  Volume 53 Issue Pages 1  
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  Call Number Equine Behaviour @ team @ Serial 2216  
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Author Anderson, G.D.; Herlocker,D.J. url  openurl
  Title Soil factors affecting the distribution of the vegetation types and their utilization by wild animals in Ngorongoro Crater, Tanzania. Type Journal Article
  Year 1973 Publication Journal of Ecology Abbreviated Journal J Ecol  
  Volume 61 Issue Pages 627-651  
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  Call Number Equine Behaviour @ team @ Serial 2217  
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