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Author Mayes, E.; Duncan, P. url  openurl
  Title Temporal patterns of feeding behaviour in free-ranging horses Type Journal Article
  Year 1986 Publication Behavior Abbreviated Journal Behav.  
  Volume 96 Issue Pages (up) 105-129  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2351  
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Author Crowell-Davis, S.L.; Houpt, K.A.; Carini, C.M. url  doi
openurl 
  Title Mutual grooming and nearest-neighbor relationships among foals of Equus caballus Type Journal Article
  Year 1986 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 15 Issue 2 Pages (up) 113-123  
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  Abstract A 3-year study was carried out on the developmental behavior of foals from birth to 24 weeks of age and the behavior of mares living with foals. Mutual-grooming partners of foals were primarily other foals. The peak frequency of mutual grooming occurred during Weeks 9-12, when fillies mutual-groomed 1.6 times h-1 and colts mutual-groomed 0.9 times h-1. Fillies mutual-groomed more frequently than colts (P < 0.025). Fillies mutual-groomed randomly with colts and other fillies (P < 0.05), whereas colts mutual-groomed almost exclusively with fillies (P = 0.03). At all ages studied, if a foal's nearest neighbor was not its mother, it was more likely to be another foal than would be expected if the foal was associating randomly with non-mother ponies. Fillies were more likely than expected to have a filly rather than a colt as their nearest neighbor (P = 0.01). Thus, during their first few months of life, the foals studied exhibited patterns of behavior which were consistent with the development of the usual social milieu of unmanaged adults, in which several mares form a cohesive herd with one or more stallions associating with them.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2276  
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Author Eisenmann V, U.H.-P. openurl 
  Title Identification and discrimination of Equus metapodials Type Book Chapter
  Year 1986 Publication Abbreviated Journal In: Equids in the ancient world  
  Volume Issue Pages (up) 118-163  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1065  
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Author Barette, C.; Vandal, D. doi  openurl
  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 (up) 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 Keiper, R.R.; Sambraus, H.H. url  doi
openurl 
  Title The stability of equine dominance hierarchies and the effects of kinship, proximity and foaling status on hierarchy rank Type Journal Article
  Year 1986 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 16 Issue 2 Pages (up) 121-130  
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  Abstract Dominance hierarchies were determined in four bands of feral horses living on Assateague Island. The bands varied in size from 10 to 16 horses, and consisted of one stallion, several mares and their offspring. The animals ranged in age from less than 1 to over 18 years. Field observation of all social interactions during the summer of 1981 was used to determine dominance. 1981 hierarchies for three of the bands were compared with hierarchies determined for the same bands in 1978, and showed that hierarchies change over time. Age was significantly correlated with rank. Mares with foals did not rank any higher in the hierarchies than mares without foals. Kinship did not appear to have an effect on dominance rank either, since neither juvenile nor adult offspring ranks correlated with the ranks of their mothers. The band stallion was not the highest-ranking animal of any band, but the location of the stallion peripheral to the main body of the band, the nature of his interactions with band members, and his length of residence in the band may have contributed to his low rank.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 683  
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Author Berry, M.P.S openurl 
  Title A comparison of different wildlife production enterprises in the northern Cape Province, South Africa Type Journal Article
  Year 1986 Publication Abbreviated Journal S. Afr. J. Wildl. Res.  
  Volume 16 Issue 4 Pages (up) 124-128  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2238  
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Author Skalka P, openurl 
  Title Breeding the Hartmann's mountain zebra, Equus zebra hartmannae Matschie, 1898, in the world and in Czechoslovakia Type Journal Article
  Year 1986 Publication Abbreviated Journal Gazella  
  Volume 13 Issue Pages (up) 127-138  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1597  
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Author Smielowski J, openurl 
  Title Khur – Dziki osiol indyjski Type Journal Article
  Year 1986 Publication Abbreviated Journal Spektrum kwartalnik naukowsy ZSP  
  Volume 2 Issue Pages (up) 145-148  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1607  
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Author Zentall, T.R.; Jackson-Smith, P.; Jagielo, J.A.; Nallan, G.B. openurl 
  Title Categorical shape and color coding by pigeons Type Journal Article
  Year 1986 Publication Journal of experimental psychology. Animal behavior processes Abbreviated Journal J Exp Psychol Anim Behav Process  
  Volume 12 Issue 2 Pages (up) 153-159  
  Keywords Animals; *Color Perception; Columbidae; *Discrimination Learning; *Form Perception; *Generalization, Stimulus; Psychophysics; Transfer (Psychology)  
  Abstract Categorical coding is the tendency to respond similarly to discriminated stimuli. Past research indicates that pigeons can categorize colors according to at least three spectral regions. Two present experiments assessed the categorical coding of shapes and the existence of a higher order color category (all colors). Pigeons were trained on two independent tasks (matching-to-sample, and oddity-from-sample). One task involved red and a plus sign, the other a circle and green. On test trials one of the two comparison stimuli from one task was replaced by one of the stimuli from the other task. Differential performance based on which of the two stimuli from the other task was introduced suggested categorical coding rules. In Experiment 1 evidence for the categorical coding of sample shapes was found. Categorical color coding was also found; however, it was the comparison stimuli rather than the samples that were categorically coded. Experiment 2 replicated the categorical shape sample effect and ruled out the possibility that the particular colors used were responsible for the categorical coding of comparison stimuli. Overall, the results indicate that pigeons can develop categorical rules involving shapes and colors and that the color categories can be hierarchical.  
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  ISSN 0097-7403 ISBN Medium  
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  Notes PMID:3701264 Approved no  
  Call Number refbase @ user @ Serial 262  
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Author Nelissen, M.H.J. url  doi
openurl 
  Title The effect of tied rank numbers on the linearity of dominance hierarchies Type Journal Article
  Year 1986 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 12 Issue 2 Pages (up) 159-168  
  Keywords dominance hierarchy, linearity, Landau's index, despotism  
  Abstract The occurence of tied rank numbers in dominance hierarchies is discussed, especially its effect on the linearity of the hierarchy. This linearity is measured with Landau's index, that is calculated for several hierarchies with tied ranks on one, two of three levels. Linearity is mostly affected by ties in small groups with many ties. A distinction is made between a hierarchy of individuals and hierarchical levels. The phenomenon of despotism is called an extreme case of tied ranks. It is proposed to regard hierarchies with a linearity in a continuous scale.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4285  
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