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Author Sakura O; Matsuzawa T openurl 
  Title Flexibility of wild chimpanzees nut-cracking behavior using stone hammers and anvils: an experimental analysis Type Journal Article
  Year 1991 Publication Ethology Abbreviated Journal Ethology  
  Volume 87 Issue (up) Pages 237  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3038  
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Author Hampton, R.R. url  openurl
  Title Animal Minds: Beyond Cognition to Consciousness Type Journal Article
  Year 2001 Publication Ethology Abbreviated Journal Ethology  
  Volume 107 Issue (up) Pages 1055-1056  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 3487  
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Author Seferta, A.; Guay, P.-J.; Marzinotto, E.; Lefebvre, L. doi  openurl
  Title Learning Differences between Feral Pigeons and Zenaida Doves: The Role of Neophobia and Human Proximity Type Journal Article
  Year 2001 Publication Ethology Abbreviated Journal Ethology  
  Volume 107 Issue (up) Pages 281-293  
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  Abstract Learning differences predicted from ecological variables can be confounded with differences in wariness of novel stimuli (neophobia). Previous work on feral pigeons (Columba livia), as well as on group-feeding and territorial zenaida doves (Zenaida aurita), reported individual and social learning differences predicted from social foraging mode. In the present study, we show that speed of learning a foraging task covaries with neophobia and latency to feed from a familiar dish in the three types of columbids. Pigeons were much faster than either territorial or group-feeding zenaida doves on all tests conducted in captivity, but showed unexpectedly strong neophobia in some urban flocks during field tests. Human proximity strongly affected performance in group-feeding doves both in the field and in captivity. They were slightly faster at learning than their territorial conspecifics in cage tests. In multiple regressions, species identity, but not social foraging mode, significantly predicted individual variation in learning, as did individual variation in neophobia. Wariness of novel stimuli and species differences associated with artificial selection appear to be more important than foraging mode and wariness of humans in accounting for learning differences between these columbids.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2184  
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Author Giada Cordoni; Elisabetta Palagi doi  openurl
  Title Reconciliation in Wolves (Canis lupus) – New Evidence for a Comparative Perspective Type Journal Article
  Year 2008 Publication Ethology Abbreviated Journal Ethology  
  Volume 114 Issue (up) Pages 298 - 308  
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  Abstract Social animals gain benefits from cooperative behaviours. However, social systems also imply competition and conflict of interest. To cope with dispersal forces, group-living animals use several peace-keeping tactics, which have been deeply investigated in primates. Other taxa, however, have been often neglected in this field research. Wolves (Canis lupus) with their high sociality and cooperative behaviour may be a good model species to investigate the reconciliation process. In this study, we provide the first evidence for the occurrence of reconciliation in a group of zoo-kept wolves. The conciliatory contacts were uniformly distributed across the different sex-class combinations. We found a linear dominance hierarchy in the colony under study, although the hierarchical relationships did not seem to affect the reconciliation dynamics. Moreover, both aggressors and victims initiated first post-conflict affinitive contact with comparable rates and both high- and low-intensity conflicts were reconciled with similar percentages. Finally, we found that coalitionary support may be a good predictor for high level of conciliatory contacts in this species.  
  Address Centro Interdipartimentale Museo di Storia Naturale e del Territorio, Universit di Pisa, Pisa, Italy; Giardino Zoologico di Pistoia, Pistoia, Italy DOI – 10.1111/j.1439-0310.2008.01474.x  
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  Publisher Place of Publication © 2008 The Authors Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4937  
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Author Bamford, A.J.; Monadjem, A.; Hardy, I.C.W. url  doi
openurl 
  Title Associations of Avian Facial Flushing and Skin Colouration with Agonistic Interaction Outcomes Type Journal Article
  Year 2010 Publication Ethology Abbreviated Journal Ethology  
  Volume Issue (up) Pages no-no  
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  Abstract Abstract Facial flushing, a colour change caused by variation of blood flow through highly vascularized skin, has been observed in taxonomically diverse bird species but the function of the behaviour has not been assessed. Lappet-faced vultures, Aegypius tracheliotos, have unfeathered heads that can rapidly flush from pink to dark red, and this has been hypothesized to indicate contest ability in vulture gatherings. We show that adults with flushed heads won most interactions against those with pale heads. A previously unnoticed colour variation of the throat, visible only when the head is flushed, was also related to the outcome of interactions: blue-throated adults participated in, and won, more interactions than red-throated adults. We suggest that the non-fixed groups of which lappet-faced vulture populations consist promote the evolution of signals of dominance that can be adjusted extremely rapidly.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1439-0310 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5180  
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Author Collier, T.C.; Blumstein, D.T.; Girod, L.; Taylor, C.E. url  doi
openurl 
  Title Is Alarm Calling Risky? Marmots Avoid Calling from Risky Places Type Journal Article
  Year 2010 Publication Ethology Abbreviated Journal Ethology  
  Volume Issue (up) Pages no-no  
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  Abstract Abstract Alarm calling is common in many species. A prevalent assumption is that calling puts the vocalizing individual at increased risk of predation. If calling is indeed costly, we need special explanations for its evolution and maintenance. In some, but not all species, callers vocalize away from safety and thus may be exposed to an increased risk of predation. However, for species that emit bouts with one or a few calls, it is often difficult to identify the caller and find the precise location where a call was produced. We analyzed the spatial dynamics of yellow-bellied marmot (Marmota flaviventris) alarm calling using an acoustic localization system to determine the location from where calls were emitted. Marmots almost always called from positions close to the safety of their burrows, and, if they produced more than one alarm call, tended to end their calling bouts closer to safety than they started them. These results suggest that for this species, potential increased predation risk from alarm calling is greatly mitigated and indeed calling may have limited predation costs.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1439-0310 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5181  
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Author Martín, J.; López, P.; Bonati, B.; Csermely, D. url  doi
openurl 
  Title Lateralization When Monitoring Predators in the Wild: A Left Eye Control in the Common Wall Lizard (Podarcis muralis) Type Journal Article
  Year 2010 Publication Ethology Abbreviated Journal Ethology  
  Volume Issue (up) Pages no-no  
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  Abstract Abstract Lateralization is the function specialization between left and right brain hemispheres. It is now ascertained in ectotherms too, where bias in eye use for different tasks, i.e., visual lateralization, is widespread. The lateral eye position on the head of ectotherm animals, in fact, allows them to observe left/right stimuli independently and allows lateralized individuals to carry out left and right perceived tasks at the same time. A recent study conducted on common wall lizards, Podarcis muralis, showed that lizards predominantly monitor a predator with the left eye while escaping. However, this work was conducted in a controlled laboratory setting owing to the difficulty of carrying out lateralization experiments under natural conditions. Nevertheless, field studies could provide important information to support what was previously found in the laboratory and demonstrate that these traits occur in nature. In this study, we conducted a field study on the antipredatory behavior of P. muralis lizards. We simulated predatory attacks on lizards in their natural environment. We found no lateralization in the measure of eye used by the lizard to monitor the predator before escaping from it, but the eye used was probably determined by the relative position of the lizard and the predator just before the attack. This first eye used did not affect escape decisions; lizards chose to escape toward the nearest refuge irrespective of whether it was located to the lizard’s left or right side. However, once they had escaped to a refuge, lizards had a left eye–mediated bias to monitor the predator when first emerging from the refuge, and this bias was likely independent of other environmental variables. Hence, these field findings support a left eye–mediated observation of the predator in P. muralis lizards, which confirms previous findings in this and other species.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1439-0310 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5182  
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Author Wolff, A.; Hausberger, M. doi  openurl
  Title Behaviour of foals before weaning may have some genetic basis Type Journal Article
  Year 1994 Publication Ethology Abbreviated Journal Ethology  
  Volume 96 Issue (up) 1 Pages 1-10  
  Keywords Locomotion; Suckling; Social behavior; Foraging behavior; Exploratory behavior; Interindividual comparison; Young animal; Genetic inheritance; Captivity; Social interaction; Feeding behavior; Perissodactyla; Ungulata; Mammalia; Vertebrata  
  Abstract In this preliminary study on foal behaviour, 13 French saddlebred foals (2-3 mo old) and their dams were observed on pasture. The most important findings are the interindividual quantitative differences in foal behaviour patterns as well as in the amount of mainly foal-initiated time spent at given distances from their mares. Interindividual differences seem in part due to a sire effect  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5022  
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Author Noë, R.; van Schaik, C.P.; van Hooff, J.A.R.A.M. url  doi
openurl 
  Title The Market Effect: an Explanation for Pay-off Asymmetries among Collaborating Animals Type Journal Article
  Year 1991 Publication Ethology Abbreviated Journal Ethology  
  Volume 87 Issue (up) 1-2 Pages 97-118  
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  Abstract Abstract * 1Animals can derive leverage over others from (a) resource holding power, based for instance on fighting ability or dominance, and (b) the possession of commodities, such as special skills and resources that cannot be taken away by force. * 2We contend that power based on the possession of commodities strongly depends on the level of supply and demand for that commodity, a phenomenon we call the ‘market effect’. * 3Several theoretical and empirical examples are given of social systems in which animals belong to two distinct classes that offer two different kinds of commodities. * 4The relative frequency of occurrence of the two classes is shown to determine the relative power of their members. * 5We consider the theoretical properties of bargaining processes by which relative power is converted into corresponding pay-off distributions. * 6We propose coalition games, a class of games with more than two players and in which bargaining is possible, as suitable paradigms for collaboration among members of social units.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1439-0310 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5413  
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Author Amandine Ramseyer; Bernard Thierry; Alain Boissy; Bertrand Dumont doi  openurl
  Title Decision-making Processes in Group Departures of Cattle Type Journal Article
  Year 2009 Publication Ethology Abbreviated Journal Ethology  
  Volume 115 Issue (up) 10 Pages 948-957  
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  Abstract To keep social cohesiveness, group-living animals have to reach consensus decisions through recruitment processes. This implies that decision-making depends on the behaviours and social relationships of several group members at different stages of movements. We tested these assumptions in a group of fifteen 18-mo-old Charolais heifers (Bos taurus) at pasture, in which two observers continuously videotaped social interactions and group departures after resting periods. These departures were preceded by a phase of preparation characterized by an increase in activity. The number of heifers participating to a movement increased with the number of group members oriented in the direction of the movement before departure. The first moving animal also recruited a higher number of mates when it had a greater number of close neighbours, the first individuals to follow being mainly its preferential partners. Coercive interactions such as pressing behaviours were observed within the 5 min preceding or following departure. After departure, the numbers of walks and restarts of the first two movers were still operative in recruiting others. The frequency of pauses of the first mover was significantly higher when it was not followed, meaning that it adjusted its behaviour to that of other group members. Decision-making was distributed among group members, with any individual being liable to move first. The behaviour of cows and their spatial distribution before departure, at departure and after departure significantly affected the number of participants in the movement, demonstrating that decision-making was time-distributed in the studied cattle group.  
  Address INRA, UR 1213 Herbivores, Saint-Gens-Champanelle, France; Dpartement Ecologie, Physiologie et Ethologie, IPHC, Centre National de la Recherche Scientifique, Universit de Strasbourg, Strasbourg, France  
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  Publisher Place of Publication © 2009 Blackwell Verlag GmbH Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4992  
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