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Author  |
Perusse, D.; Lefebvre, L. |
| Title |
Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon |
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Journal Article |
| Year |
1985 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
11 |
Issue |
1 |
Pages |
39-52 |
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| Abstract |
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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| Author |
Ord, T.J.; Evans, C.S. |
| Title |
Interactive video playback and opponent assessment in lizards |
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Journal Article |
| Year |
2002 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
59 |
Issue |
2 |
Pages |
55-65 |
| Keywords |
Animal communication; Display; Lizard; Playback; Visual signal |
| Abstract |
Video playback has been used to explore many issues in animal communication, but the scope of this work has been constrained by the lack of stimulus-subject interaction. In many natural contexts, each participant's signalling behaviour is dependent from moment-to-moment on that of the other. Analyses of acoustic communication demonstrate the value of reproducing such social contingencies. We assessed the utility of interactive playback for studies of visual signalling by comparing the responses of male Jacky dragons, Amphibolurus muricatus, to interactive and non-interactive digital video playbacks of a life-sized conspecific. Displays produced by lizards in the interactive condition had the effect of suppressing the aggressive display of their simulated opponent. Each stimulus sequence generated during an interactive playback was subsequently played to a size-matched control animal. Males that could interact with the video stimulus responded principally with aggressive displays, while those that could not produced a mixture of aggressive and appeasement signals. Adding a degree of receiver responsiveness is hence sufficient to alter the type of signal evoked, even when video stimuli are physically identical. Interactive playback permits the experimental study of a broader range of theoretical topics and can enhance the realism of video stimuli. |
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refbase @ user @ |
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539 |
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Ninomiya, S. |
| Title |
Social leaning and stereotypy in horses |
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Journal Article |
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2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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22-23 |
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620 |
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| Author |
Nelissen, M.H.J. |
| Title |
The effect of tied rank numbers on the linearity of dominance hierarchies |
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Journal Article |
| Year |
1986 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
12 |
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2 |
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159-168 |
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dominance hierarchy, linearity, Landau's index, despotism |
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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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Equine Behaviour @ team @ |
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4285 |
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| Author |
Murphy, J.; Arkins, S. |
| Title |
Equine learning behaviour |
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Journal Article |
| Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
76 |
Issue |
1 |
Pages |
1-13 |
| Keywords |
Horse; Behaviour; Learning; Processes; Memory |
| Abstract |
Scientists and equestrians continually seek to achieve a clearer understanding of equine learning behaviour and its implications for training. Behavioural and learning processes in the horse are likely to influence not only equine athletic success but also the usefulness of the horse as a domesticated species. However given the status and commercial importance of the animal, equine learning behaviour has received only limited investigation. Indeed most experimental studies on equine cognitive function to date have addressed behaviour, learning and conceptualisation processes at a moderately basic cognitive level compared to studies in other species. It is however, likely that the horses with the greatest ability to learn and form/understand concepts are those, which are better equipped to succeed in terms of the human-horse relationship and the contemporary training environment. Within equitation generally, interpretation of the behavioural processes and training of the desired responses in the horse are normally attempted using negative reinforcement strategies. On the other hand, experimental designs to actually induce and/or measure equine learning rely almost exclusively on primary positive reinforcement regimes. Employing two such different approaches may complicate interpretation and lead to difficulties in identifying problematic or undesirable behaviours in the horse. The visual system provides the horse with direct access to immediate environmental stimuli that affect behaviour but vision in the horse is of yet not fully investigated or understood. Further investigations of the equine visual system will benefit our understanding of equine perception, cognitive function and the subsequent link with learning and training. More detailed comparative investigations of feral or free-ranging and domestic horses may provide useful evidence of attention, stress and motivational issues affecting behavioural and learning processes in the horse. The challenge for scientists is, as always, to design and commission experiments that will investigate and provide insight into these processes in a manner that withstands scientific scrutiny. |
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629 |
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Murphy, J.; Arkins, S. |
| Title |
Synthesizing what we know of equine learning behaviour |
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Journal Article |
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2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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57-60 |
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876 |
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Mercado E.; Killebrew D.A.; Pack A.A.; Macha I.V.B.; Herman L.M. |
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Generalization of 'same-different' classification abilities in bottlenosed dolphins |
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Journal Article |
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2000 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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50 |
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79-94 |
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refbase @ user @ |
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3479 |
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| Author |
McCall, C.A. |
| Title |
Making equine learning research applicable to training procedures |
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Journal Article |
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2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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1 |
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27-28 |
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623 |
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Macuda, T.; Timney, B. |
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Luminance and chromatic discrimination in the horse (Equus caballus) |
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Journal Article |
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1999 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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44 |
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3 |
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301-307 |
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Colour vision; Chromatic discrimination; Luminance discrimination; Horse |
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Equine colour vision was measured under conditions that minimised the possibility of animals using brightness cues to make chromatic discriminations. In a two-stage study, we first obtained luminance discrimination functions for achromatic targets then tested for chromatic discrimination over a range of target luminances. Horses were trained on a two-choice discrimination task. The positive stimulus was varied in luminance and/or colour using neutral density and broad band colour filters. The negative stimulus appeared as a uniform grey. In the brightness discrimination task, the horses performed well at large luminance differences but their percentage of correct responses declined to near chance levels at differences of less than 0.2 log units. In addition, a decrement in performance was noted at luminance differences of less than 0.2 log units for green and yellow chromatic discrimination functions, suggesting that horses cannot easily discriminate yellow and green from grey. However, the chromatic discrimination functions for red and blue showed that animals performed very well across the full range of target luminances. These results suggest that horses are at least dichromats. |
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844 |
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Linklater, W.L. |
| Title |
Equine learning in a wider context--Opportunities for integrative pluralism |
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Journal Article |
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2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
76 |
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53-56 |
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