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Author Perusse, D.; Lefebvre, L. url  openurl
  Title Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon Type Journal Article
  Year 1985 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 11 Issue 1 Pages 39-52  
  Keywords  
  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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  Call Number Equine Behaviour @ team @ Serial 4227  
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Author Lafferty, K.D. doi  openurl
  Title Look what the cat dragged in: do parasites contribute to human cultural diversity? Type Journal Article
  Year 2005 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 68 Issue 3 Pages 279-282  
  Keywords Adaptation, Physiological/physiology; Adaptation, Psychological/physiology; Animals; Behavior/physiology; *Behavior Control; Cats/*parasitology; Cultural Diversity; Host-Parasite Relations; Humans; Personality/*physiology; Toxoplasma/*physiology; Toxoplasmosis/parasitology/*psychology  
  Abstract  
  Address Western Ecological Research Center, United States Geological Survey, c/o Marine Science Institute, University of California, Santa Barbara, CA 93106, USA. lafferty@lifesci.ucsb.edu  
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  Language English Summary Language Original Title  
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  ISSN 0376-6357 ISBN Medium  
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  Notes PMID:15792708 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4148  
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Author Boughner, R.L.; Papini, M.R. doi  openurl
  Title Appetitive latent inhibition in rats: preexposure performance does not predict conditioned performance Type Journal Article
  Year 2006 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 72 Issue 1 Pages 42-51  
  Keywords Animals; *Appetitive Behavior; Association Learning; *Conditioning, Classical; *Habituation, Psychophysiologic; Individuality; *Inhibition (Psychology); Male; Motivation; Rats; Rats, Wistar; *Reaction Time  
  Abstract Nonreinforced preexposure to a conditioned stimulus impairs subsequent conditioning with that stimulus. The goal of these studies was to assess the extent to which acquisition performance could be predicted from preexposure performance using a correlational approach. For both preexposure and autoshaping, four measures of performance were computed, including overall average lever pressing, lever pressing in the initial session, percentage change in lever pressing, and slopes. These measures were correlated in a large sample of rats trained in an autoshaping situation. None of the three measures of autoshaping performance was consistently predicted by any of the three measures of preexposure performance. These results are consistent with the view that latent inhibition is not reducible to long-term habituation.  
  Address Department of Psychology, Texas Christian University, TX 76129, United States  
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  ISSN 0376-6357 ISBN Medium  
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  Notes PMID:16406375 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4147  
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Author Range, F.; Bugnyar, T.; Schlogl, C.; Kotrschal, K. doi  openurl
  Title Individual and sex differences in learning abilities of ravens Type Journal Article
  Year 2006 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 73 Issue 1 Pages 100-106  
  Keywords Animals; Behavior, Animal/*physiology; *Crows; Discrimination Learning/*physiology; Exploratory Behavior/physiology; Female; *Individuality; Male; Sex Factors; Spatial Behavior  
  Abstract Behavioral and physiological characteristics of individuals within the same species have been found to be stable across time and contexts. In this study, we investigated individual differences in learning abilities and object and social manipulation to test for consistency within individuals across different tasks. Individual ravens (Corvus corax) were tested in simple color and position discrimination tasks to establish their learning abilities. We found that males were significantly better in the acquisition of the first discrimination task and the object manipulation task, but not in any of the other tasks. Furthermore, faster learners engaged less often in manipulations of conspecifics and exploration of objects to get access to food. No relationship between object and social manipulation and reversal training were found. Our results suggest that individual differences in regard to the acquisition of new tasks may be related to personalities or at least object manipulation in ravens.  
  Address Konrad Lorenz Research Station, A-4645 Gruenau 11, Austria. friederike.range@univie.ac.at  
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  Notes PMID:16675158 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4146  
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Author Hirata, S. doi  openurl
  Title A note on the responses of chimpanzees (Pan troglodytes) to live self-images on television monitors Type Journal Article
  Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 75 Issue 1 Pages 85-90  
  Keywords Animals; *Discrimination Learning; Female; Male; Pan troglodytes/*psychology; *Self Concept; Self Psychology; Social Behavior; Television  
  Abstract The majority of studies on self-recognition in animals have been conducted using a mirror as the test device; little is known, however, about the responses of non-human primates toward their own images in media other than mirrors. This study provides preliminary data on the reactions of 10 chimpanzees to live self-images projected on two television monitors, each connected to a different video camera. Chimpanzees could see live images of their own faces, which were approximately life-sized, on one monitor. On the other monitor, they could see live images of their whole body, which were approximately one-fifth life-size, viewed diagonally from behind. In addition, several objects were introduced into the test situation. Out of 10 chimpanzees tested, 2 individuals performed self-exploratory behaviors while watching their own images on the monitors. One of these two chimpanzees successively picked up two of the provided objects in front of a monitor, and watched the images of these objects on the monitor. The results indicate that these chimpanzees were able to immediately recognize live images of themselves or objects on the monitors, even though several features of these images differed from those of their previous experience with mirrors.  
  Address Great Ape Research Institute, Hayashibara Biochemical Laboratories Inc., Okayama, Japan. hirata@gari.be.to  
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  ISSN 0376-6357 ISBN Medium  
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  Notes PMID:17324534 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4145  
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Author Petherick, J.C.; Seawright, E.; Waddington, D. url  doi
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  Title Influence of motivational state on choice of food or a dustbathing/foraging substrate by domestic hens Type Journal Article
  Year 1993 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 28 Issue 3 Pages 209-220  
  Keywords Food; Learning; Litter; Motivation; Poultry; Preference  
  Abstract Domestic hens were trained to run a Y-maze and make an association between differently coloured doorways and access to food pellets or sand. The hens were tested for their choice of doorway when the goals were not visible from the choice point and when they were food or sand deprived. Hens made the choice appropriate to their deprivation state (correct choice) significantly more often for food than sand and were faster at choosing and entering the goal box when food deprived. In a follow up experiment, the goals were visible from the choice point. Again the hens chose correctly significantly more often when food than sand deprived and made the choice and entered the goal box faster when food deprived. Thus, failure to choose sand in the first experiment was not due to an inability to learn the association, but appears to result from a strong motivation to feed in the Y-maze, even when not food deprived, and a weak motivation to dustbathe or forage, even when sand deprived.  
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  Call Number Equine Behaviour @ team @ Serial 3608  
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Author Duncan, I.J.H.; Widowski, T.M.; Malleau, A.E.; Lindberg, A.C.; Petherick, J.C. url  doi
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  Title External factors and causation of dustbathing in domestic hens Type Journal Article
  Year 1998 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 43 Issue 2 Pages 219-228  
  Keywords Dustbathing; Illumination; Laying hens; Radiant heat; Social facilitation; Temperature  
  Abstract Dustbathing is known to be motivated by complex interactions between internal factors which build up over time and external factors, such as the sight of a dusty substrate. In this study, the effects of other external factors were investigated. Environmental temperature was shown to be important; frequencies of dustbathing were greater when hens were held at 22 than at 10[degree sign]C (P<0.01). In a second experiment, a radiant heat source or a radiant heat+light source, balanced to give the same radiant heat, resulted in more dustbathing behaviour during a 1-h stimulus period than during the same period with no stimulus (P<0.05). Components of dustbathing were increased more by the heat+light stimulus than by the heat stimulus alone (P<0.03). In a third experiment, the amount of dustbathing performed by individual hens in cages with dustbaths was increased by the presence of a group of hens dustbathing in an adjoining pen with a dustbath compared with the amount occurring when the hens were absent from the pen.  
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  Call Number Equine Behaviour @ team @ Serial 3607  
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Author Petherick, J.C.; Waddington, D.; Duncan, I.J.H. url  openurl
  Title Learning to gain access to a foraging and dustbathing substrate by domestic fowl: is `out of sight out of mind'? Type Journal Article
  Year 1991 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 22 Issue 3 Pages 213-226  
  Keywords Domestic fowl; Dustbathing; Welfare; Learning; Cognition  
  Abstract Domestic fowl were deprived of the opportunity to perform litter-related behaviour for three or four days and were tested in a Y-maze (which they had previously been trained to run) for their ability to associate a coloured cue with gaining access to peat. When the goal boxes were within sight of the choice point, most birds chose peat. However, when the birds had to rely solely on the coloured cue only one bird from 12 showed learning. However, the birds seemed to have some expectation of a reward, as they ran faster if, on the previous trial, they had chosen peat. The inability of the birds to learn the association may have been an artefact of the schedule of deprivation and testing, for when they were hungry and tested in the same way they were again unable to learn an association between the same coloured cue and food reward. The experiment with peat was repeated using “massed” trials (several trials in immediate succession) during training and testing and six from 15 birds showed learning. These results suggest that the initial failure to learn was probably due to the training and testing schedule, that access to peat appears to be rewarding and that hens can learn an association between an abstract cue and a rewarding consequence. This is consistent with the possibility that domestic fowls may have some cognitive representation of peat when it is out of sight.  
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  Call Number Equine Behaviour @ team @ Serial 3609  
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Author Poling, A.; Thomas, J.; Hall-Johnson, E.; Picker, M. url  doi
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  Title Self-control revisited: Some factors that affect autoshaped responding Type Journal Article
  Year 1985 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 10 Issue 1-2 Pages 77-85  
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  Abstract Pigeons were exposed to autoshaping procedures under which 50% of red key illuminations were followed by 9-sec food deliveries, and 50% of blue key illuminations were followed by 3-sec food deliveries. When all key illuminations were 6 sec, pigeons preferred the red stimulus. Subsequent manipulations demonstrated that preference could be shifted to the blue stimulus by either increasing the duration of the red stimulus or imposing a delay interval between the offset of that stimulus and food delivery. A final experiment demonstrated that, in two of three subjects, preference for key illuminations associated with longer, but delayed, food deliveries generally increased as the duration of all key illuminations was lengthened. These results, obtained under conditions where keypecking had no programmed consequences, are similar to those previously observed under procedures involving a positive response-food dependency.  
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  Call Number Equine Behaviour @ team @ Serial 3606  
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Author Robinson, T.A.; Foster, T.M.; Temple, W.; Poling, A. url  doi
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  Title Performance of domestic hens under progressive-ratio schedules of food delivery Type Journal Article
  Year 1995 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 34 Issue 3 Pages 233-239  
  Keywords Progressive-ratio schedule; Domestic hen; Behavioral economics; Satiation  
  Abstract Domestic hens were exposed to progressive-ratio 2 and progressive-ratio 10 schedules of food delivery with different initial ratios (2, 10, 20, 30, and 40). Breaking points, defined as the largest ratios completed before responding ceased for 600 consecutive seconds, were recorded under all conditions. In general, breaking points were higher under the PR 10 schedule than under the PR 2 schedule, and the value of the initial ratio did not systematically affect the breaking point. The former finding suggests that relative satiation affected breaking points in the present study, but the latter finding suggests that the primary determinant was the `price' of the reinforcer, defined in terms of the number of responses required to produce it. Breaking points were similar under conditions where initial ratios changed from session to session and under more conventional conditions, where initial ratios remained unchanged over several sessions.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3605  
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