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Author |
Perusse, D.; Lefebvre, L. |
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Title |
Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon |
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1985 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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11 |
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1 |
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39-52 |
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Feral and laboratory flocks of rock doves ( ) show a pattern of grouped sequential exploitation when simultaneously presented with two dispersed, depleting patches of seed. This behavior contrasts with the ideal free distribution pattern shown when patches are small and concentrated. Grouped sequential exploitation consists of two phases: all pigeons first land together and feed at one patch, then leave one by one for the other patch. Departure times of individuals for the second patch are correlated with feeding rate at patch 1, which is in turn correlated with position in the dominance hierarchy. The decision to switch from patch 1 to patch 2 improves individual feeding rates in all cases, but is done slightly later than it should according to optimal foraging theory. |
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Equine Behaviour @ team @ |
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4227 |
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Cozzi, A.; Sighieri, C.; Gazzano, A.; Nicol, C.J.; Baragli, P. |
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Title |
Post-conflict friendly reunion in a permanent group of horses (Equus caballus) |
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Journal Article |
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2010 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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85 |
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2 |
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185-190 |
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aggression; affiliative interactions; conflict resolution; horse; post conflict; behaviour; reconciliation |
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Gregarious animals living in permanent social groups experience intra-group competition. Conflicts over resources can escalate into costly aggression and, in some conditions, non-dispersive forms of conflict resolution may be favoured. Post-conflict friendly reunions, hence reconciliation, have been described in a variety of species. The aim of this study was to explore, for the first time, the occurrence of reconciliation in a group of domestic horses (Equus caballus) and learn more about strategies used to maintain group cohesion. The behaviour of seven horses living as permanent group in an enclosure for at least 2 years was observed by video for 108 h from June to August 2007. We used a Post-Conflict/Matched Control method to assess the existence of reconciliation and third-party affiliation. Behaviours recorded Post-Conflict, or during Matched Control periods, were classified as affiliative based on previous descriptions of visual communication patterns in horses. The proportion of attracted pairs over total post-conflict situations was significantly greater than the proportion of dispersed pairs, both during dyadic interactions (p < 0.001) and during triadic interactions (p = 0.002). The results of the present study show that both dyadic reconciliation and third-party post-conflict affiliative interactions form important social mechanisms for managing post-conflict situations in horses. |
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0376-6357 |
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Equine Behaviour @ team @ |
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5168 |
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Snycerski, S.; Laraway, S.; Poling, A. |
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Title |
Response acquisition with immediate and delayed conditioned reinforcement |
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Year |
2005 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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68 |
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1 |
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1-11 |
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Keywords |
Response acquisition; Conditioned reinforcement; Delayed reinforcement; Secondary reinforcement; Rats |
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Groups comprising eight rats initially were exposed to response-independent water deliveries, then to conditions under which a lever-press response raised an empty dipper immediately or after a resetting delay of 15, 30, or 45 s. When their performance was compared to that of control animals using a 90% confidence level, six rats in the immediate-reinforcement group met the primary criterion for response acquisition during a single 6-h session; 4, 4, and 3 did so in the 15, 30, and 45 s delay groups, respectively. Similar evidence of acquisition was obtained when a 95% confidence level was used. With a 99% confidence level, however, evidence of acquisition was not compelling. Although these data appear to provide the first demonstration of response acquisition in the absence of handshaping or autoshaping under conditions where the putative reinforcer is both conditioned and delayed, they also demonstrate that whether response acquisition occurs depends, in part, on how it is defined. |
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Equine Behaviour @ team @ |
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3600 |
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Author |
da Cruz, A.B.; Hirata, S.; dos Santos, M.E.; Mendonça, R.S. |
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Title |
Show me your best side: Lateralization of social and resting behaviors in feral horses |
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Year |
2023 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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206 |
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104839 |
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Keywords |
Cerebral lateralization; Drone technology; ; Hemispheric specialization; Horses; Social interactions |
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Growing evidence shows a variety of sensorial and motor asymmetries in social and non-social interactions in various species, indicating a lateralized processing of information by the brain. Using digital video cameras on tripods and drones, this study investigated lateralization in frequency and duration of social behavior patterns, in affiliative, agonistic, and resting contexts, in a feral population of horses (Equus ferus caballus) in Northern Portugal, consisting of 37 individuals organized in eight harem groups. Affiliative interactions (including grooming) were more often performed, and lasted longer, when recipients were positioned to the right side. In recumbent resting (animals lying down) episodes on the left side lasted longer. Our results of an affiliative behavior having a right side tendency, provide partial support to the valence-specific hypothesis of Ahern and Schwartz (1979) – left hemisphere dominance for positive affect, affiliative behaviors. Longer recumbent resting episodes on the left side may be due to synchronization. However, in both instances it is discussed how lateralization may be context dependent. Investigating the position asymmetries of social behaviors in feral equids will contribute to a better understanding of differential lateralization and hemispheric specialization from the ecological and evolutionary perspectives. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6697 |
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Author |
da Cruz, A.B.; Hirata, S.; dos Santos, M.E.; Mendonça, R.S. |
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Title |
Show me your best side: Lateralization of social and resting behaviors in feral horses |
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Journal Article |
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Year |
2023 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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206 |
Issue |
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Pages |
104839 |
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Keywords |
Cerebral lateralization; Drone technology; ; Hemispheric specialization; Horses; Social interactions |
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Abstract |
Growing evidence shows a variety of sensorial and motor asymmetries in social and non-social interactions in various species, indicating a lateralized processing of information by the brain. Using digital video cameras on tripods and drones, this study investigated lateralization in frequency and duration of social behavior patterns, in affiliative, agonistic, and resting contexts, in a feral population of horses (Equus ferus caballus) in Northern Portugal, consisting of 37 individuals organized in eight harem groups. Affiliative interactions (including grooming) were more often performed, and lasted longer, when recipients were positioned to the right side. In recumbent resting (animals lying down) episodes on the left side lasted longer. Our results of an affiliative behavior having a right side tendency, provide partial support to the valence-specific hypothesis of Ahern and Schwartz (1979) – left hemisphere dominance for positive affect, affiliative behaviors. Longer recumbent resting episodes on the left side may be due to synchronization. However, in both instances it is discussed how lateralization may be context dependent. Investigating the position asymmetries of social behaviors in feral equids will contribute to a better understanding of differential lateralization and hemispheric specialization from the ecological and evolutionary perspectives. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6711 |
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Fureix, C.; Pagès, M.; Bon, R.; Lassalle, J.-M.; Kuntz, P.; Gonzalez, G. |
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Title |
A preliminary study of the effects of handling type on horses' emotional reactivity and the human-horse relationship |
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Journal Article |
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Year |
2009 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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82 |
Issue |
2 |
Pages |
202-210 |
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Emotional reactivity; Handling style; Horse; Human-horse relationship |
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Handling is a crucial component of the human-horse relationship. Here, we report data from an experiment conducted to assess and compare the effect of two training methods. Two groups of six Welsh mares were trained during four sessions of 50 min, one handled with traditional exercises (halter leading, grooming/brushing, lifting feet, lunging and pseudo-saddling (using only girth and saddle pad) and the second group with natural horsemanship exercises (desensitization, yielding to body pressure, lunging and free-lunging). Emotional reactivity (ER) and the human-horse relationship (HHR) were assessed both prior to and following handling. A social isolation test, a neophobia test and a bridge test were used to assess ER. HHR was assessed through test of spontaneous approach to, and forced approach by, an unknown human. Horses' ER decreased after both types of handling as indicated by decreases in the occurrence of whinnying during stressful situations. Head movement (jerk/shake) was the most sensitive variable to handling type. In the spontaneous approach tests, horses in the traditional handling group showed higher latencies to approach a motionless person after handling than did the natural horsemanship group. Our study suggests that natural horsemanship exercises could be more efficient than traditional exercises for improving horses' HHR. |
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0376-6357 |
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Equine Behaviour @ team @ |
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5092 |
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Author |
Zentall, T.R. |
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Title |
Mental time travel in animals: a challenging question |
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Journal Article |
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Year |
2006 |
Publication |
Behavioural processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
72 |
Issue |
2 |
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173-183 |
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Animals; *Behavior, Animal; Columbidae; Concept Formation; Conditioning, Operant; *Imagination; *Memory; Mental Recall; Planning Techniques; Rats; *Time Perception; Transfer (Psychology) |
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Humans have the ability to mentally recreate past events (using episodic memory) and imagine future events (by planning). The best evidence for such mental time travel is personal and thus subjective. For this reason, it is particularly difficult to study such behavior in animals. There is some indirect evidence, however, that animals have both episodic memory and the ability to plan for the future. When unexpectedly asked to do so, animals can report about their recent past experiences (episodic memory) and they also appear to be able to use the anticipation of a future event as the basis for a present action (planning). Thus, the ability to imagine past and future events may not be uniquely human. |
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Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. zentall@uky.edu |
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PMID:16466863 |
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refbase @ user @ |
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218 |
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Kilian, A.; Fersen, L. von; Güntürkün, O. |
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Left hemispheric advantage for numerical abilities in the bottlenose dolphin |
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Journal Article |
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Year |
2005 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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68 |
Issue |
2 |
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179-184 |
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Bottlenose dolphin; Hemispheric specialization; Monocular vision; Numerical ability |
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In a two-choice discrimination paradigm, a bottlenose dolphin discriminated relational dimensions between visual numerosity stimuli under monocular viewing conditions. After prior binocular acquisition of the task, two monocular test series with different number stimuli were conducted. In accordance with recent studies on visual lateralization in the bottlenose dolphin, our results revealed an overall advantage of the right visual field. Due to the complete decussation of the optic nerve fibers, this suggests a specialization of the left hemisphere for analysing relational features between stimuli as required in tests for numerical abilities. These processes are typically right hemisphere-based in other mammals (including humans) and birds. The present data provide further evidence for a general right visual field advantage in bottlenose dolphins for visual information processing. It is thus assumed that dolphins possess a unique functional architecture of their cerebral asymmetries. |
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Equine Behaviour @ team @ |
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5366 |
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Kotrschal, K.; Schöberl, I.; Bauer, B.; Thibeaut, A.-M.; Wedl, M. |
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Dyadic relationships and operational performance of male and female owners and their male dogs |
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2009 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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81 |
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3 |
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383-391 |
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Dyadic interactions; Human-animal companions; Human-animal relationships; Human-dog dyads; Personality; Social stress |
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In the paper we investigate how owner personality, attitude and gender influence dog behavior, dyadic practical functionality and the level of dog salivary cortisol. In three meetings, 12 female and 10 male owners of male dogs answered questionnaires including the Neo-FFI human personality inventory. Their dyadic behavior was video-taped in a number of test situations, and saliva samples were collected. Owners who scored highly in neuroticism (Neo-FFI dimension one) viewed their dogs as social supporters and spent much time with them. Their dogs had low baseline cortisol levels, but such dyads were less successful in the operational task. Owners who scored highly in extroversion (Neo-FFI dimension two) appreciated shared activities with their dogs which had relatively high baseline cortisol values. Dogs that had female owners were less sociable-active (dog personality axis 1) than dogs that had male owners. Therefore, it appears that owner gender and personality influences dyadic interaction style, dog behavior and dyadic practical functionality. |
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Equine Behaviour @ team @ |
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4947 |
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Slater, C.; Dymond, S. |
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Using differential reinforcement to improve equine welfare: Shaping appropriate truck loading and feet handling |
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2011 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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86 |
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3 |
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329-339 |
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Positive reinforcement; Differential reinforcement; Shaping; Autoshaping; sign tracking; Common handling; Multiple baseline; Changing criterion; Horses |
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Inappropriate behavior during common handling procedures with horses is often subject to aversive treatment. The present study replicated and extended previous findings using differential reinforcement to shape appropriate equine handling behavior. In Study 1, a multiple baseline across subjects design was used with four horses to determine first the effects of shaping target-touch responses and then successive approximations of full truck loading under continuous and intermittent schedules of reinforcement. Full loading responses were shaped and maintained in all four horses and occurrences of inappropriate behaviors reduced to zero. Generalization of the loading response was also observed to both a novel trainer and trailer. In Study 2, a changing criterion design was used to increase the duration of feet handling with one horse. The horse's responding reached the terminal duration criterion of 1 min and showed consistent generalization and one-week maintenance. Overall, the results of both studies support the use of applied equine training systems based on positive reinforcement for increasing appropriate behavior during common handling procedures. |
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Equine Behaviour @ team @ |
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5323 |
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