| Records |
| Author |
Pepperberg, I.M. |
| Title |
Grey parrot numerical competence: a review |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue  |
4 |
Pages |
377-391 |
| Keywords |
Animals; *Behavior, Animal; *Comprehension; *Concept Formation; *Mathematics; *Parrots |
| Abstract |
The extent to which humans and nonhumans share numerical competency is a matter of debate. Some researchers argue that nonhumans, lacking human language, possess only a simple understanding of small quantities, generally less than four. Animals that have, however, received some training in human communication systems might demonstrate abilities intermediate between those of untrained nonhumans and humans. Here I review data for a Grey parrot (Psittacus erithacus) that has been shown to quantify sets of up to and including six items (including heterogeneous subsets) using vocal English labels, to comprehend these labels fully, and to have a zero-like concept. Recent research demonstrates that he can also sum small quantities. His success shows that he understands number symbols as abstract representations of real-world collections, and that his sense of number compares favorably to that of chimpanzees and young human children. |
| Address |
Department of Psychology, Brandeis University, Waltham, MA 02454, USA |
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English |
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| ISSN |
1435-9448 |
ISBN |
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| Notes |
PMID:16909236 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2448 |
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| Author |
Bugnyar, T.; Heinrich, B. |
| Title |
Pilfering ravens, Corvus corax, adjust their behaviour to social context and identity of competitors |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue |
4 |
Pages |
369-376 |
| Keywords |
Adaptation, Psychological; Animals; *Behavior, Animal; *Competitive Behavior; Crows/*physiology; *Deception; Feeding Behavior; Female; Male; Social Behavior; *Social Environment |
| Abstract |
Like other corvids, food-storing ravens protect their caches from being pilfered by conspecifics by means of aggression and by re-caching. In the wild and in captivity, potential pilferers rarely approach caches until the storers have left the cache vicinity. When storers are experimentally prevented from leaving, pilferers first search at places other than the cache sites. These behaviours raise the possibility that ravens are capable of withholding intentions and providing false information to avoid provoking the storers' aggression for cache protection. Alternatively, birds may refrain from pilfering to avoid conflicts with dominants. Here we examined whether ravens adjust their pilfer tactics according to social context and type of competitors. We allowed birds that had witnessed a conspecific making caches to pilfer those caches either in private, together with the storer, or together with a conspecific bystander that had not created the caches (non-storer) but had seen them being made. Compared to in-private trials, ravens delayed approaching the caches only in the presence of storers. Furthermore, they quickly engaged in searching away from the caches when together with dominant storers but directly approached the caches when together with dominant non-storers. These findings demonstrate that ravens selectively alter their pilfer behaviour with those individuals that are likely to defend the caches (storers) and support the interpretation that they are deceptively manipulating the others' behaviour. |
| Address |
Department of Biology, University of Vermont, Burlington, VT 05405, USA. thomas.bugnyar@univie.ac.at |
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English |
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| ISSN |
1435-9448 |
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| Notes |
PMID:16909235 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2449 |
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| Author |
Lea, S.E.G.; Goto, K.; Osthaus, B.; Ryan, C.M.E. |
| Title |
The logic of the stimulus |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue |
4 |
Pages |
247-256 |
| Keywords |
Animals; Behavior, Animal/*physiology; Cognition/*physiology; Columbidae; Comprehension/physiology; Dogs; Humans; *Logic; Pattern Recognition, Visual/physiology; Perception/*physiology; Problem Solving/*physiology; Species Specificity |
| Abstract |
This paper examines the contribution of stimulus processing to animal logics. In the classic functionalist S-O-R view of learning (and cognition), stimuli provide the raw material to which the organism applies its cognitive processes-its logic, which may be taxon-specific. Stimuli may contribute to the logic of the organism's response, and may do so in taxon-specific ways. Firstly, any non-trivial stimulus has an internal organization that may constrain or bias the way that the organism addresses it; since stimuli can only be defined relative to the organism's perceptual apparatus, and this apparatus is taxon-specific, such constraints or biases will often be taxon-specific. Secondly, the representation of a stimulus that the perceptual system builds, and the analysis it makes of this representation, may provide a model for the synthesis and analysis done at a more cognitive level. Such a model is plausible for evolutionary reasons: perceptual analysis was probably perfected before cognitive analysis in the evolutionary history of the vertebrates. Like stimulus-driven analysis, such perceptually modelled cognition may be taxon-specific because of the taxon-specificity of the perceptual apparatus. However, it may also be the case that different taxa are able to free themselves from the stimulus logic, and therefore apply a more abstract logic, to different extents. This thesis is defended with reference to two examples of cases where animals' cognitive logic seems to be isomorphic with perceptual logic, specifically in the case of pigeons' attention to global and local information in visual stimuli, and dogs' failure to comprehend means-end relationships in string-pulling tasks. |
| Address |
School of Psychology, Washington Singer Laboratories, University of Exeter, Exeter, EX4 4QG, United Kingdom. s.e.g.lea@exeter.ac.uk |
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English |
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| ISSN |
1435-9448 |
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| Notes |
PMID:16909234 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2450 |
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| Author |
Watanabe, S.; Huber, L. |
| Title |
Animal logics: decisions in the absence of human language |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue |
4 |
Pages |
235-245 |
| Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Brain/physiology; Cognition/*physiology; Decision Making/*physiology; Evolution; Humans; *Language; *Logic; Problem Solving/physiology |
| Abstract |
Without Abstract |
| Address |
Department of Psychology, Keio University, Mita 2-15-45, Minato-ku, Tokyo 108, Japan. swat@flet.keio.ac.jp |
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English |
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| ISSN |
1435-9448 |
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| Notes |
PMID:16909231 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2453 |
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| Author |
Van Schaik, C. |
| Title |
Why are some animals so smart? |
Type |
Journal Article |
| Year |
2006 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
| Volume |
294 |
Issue |
4 |
Pages |
64-71 |
| Keywords |
Animals; *Behavior, Animal; Cognition; Conditioning (Psychology); Culture; Environment; Equipment and Supplies; Evolution; Indonesia; *Intelligence; Learning; Pongo pygmaeus/*physiology; Social Behavior |
| Abstract |
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| Address |
Anthropological Institute and Museum, University of Zurich, Switzerland |
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English |
Summary Language |
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| ISSN |
0036-8733 |
ISBN |
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| Notes |
PMID:16596881 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2830 |
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| Author |
Gray, E.R.; Spetch, M.L. |
| Title |
Pigeons Encode Absolute Distance but Relational Direction From Landmarks and Walls |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of Experimental Psychology: Animal Behavior Processes |
Abbreviated Journal |
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| Volume |
32 |
Issue |
4 |
Pages |
474-480 |
| Keywords |
spatial cognition; absolute distance; relational direction; landmark configurations |
| Abstract |
In recent studies, researchers have examined animals' use of absolute or relational distances in finding a hidden goal. When trained with an array of landmarks, most animals use the default strategy of searching at an absolute distance from 1 or more landmarks. In contrast, when trained in enclosures, animals often use the relationship among walls. In the present study, pigeons were trained to find the center of an array of landmarks or a set of short walls that did not block external cues. Expansion tests showed that both groups of pigeons primarily used an absolute distance strategy. However, on rotational tests, pigeons continued to search in the center of the array, suggesting that direction was learned in relation to array. |
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no |
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Equine Behaviour @ team @ |
Serial |
2894 |
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| Author |
Carmalt, J.L.; Carmalt, K.P.; Barber, S.M. |
| Title |
The effect of occlusal equilibration on sport horse performance |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of Veterinary Dentistry |
Abbreviated Journal |
J Vet Dent |
| Volume |
23 |
Issue |
4 |
Pages |
226-230 |
| Keywords |
Analysis of Variance; Animals; Cross-Over Studies; *Dental Occlusion, Balanced; Horse Diseases/*therapy; Horses; Malocclusion/therapy/*veterinary; Occlusal Adjustment/methods/*veterinary; Prospective Studies; Treatment Outcome |
| Abstract |
The objective of this study was to investigate the effect of routine dental occlusal equilibration treatment on dressage horse performance. Sixteen horses (11 treated; 5 untreated) ridden by a single rider performed a standardized dressage test twice and were scored by two experienced dressage judges according to recognized movements and rider cues. All horses were sedated and a full-mouth speculum was used to facilitate a complete oral examination. Treated horses had dental equilibration performed using a motorized dental instrument. The horses performed a second test 48-hours after dental equilibration, exactly as the baseline test, with the judges and rider blinded as to treatment group. The total test score as well as the individual movement scores were evaluated for equality of variance and statistical tests were applied to determine the influence of treatment. There was no significant improvement in the test score of horses that had received occlusal equilibration. |
| Address |
Scone Veterinary Hospital, NSW, Australia. carmalt_vet@hotmail.com |
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English |
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| ISSN |
0898-7564 |
ISBN |
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| Notes |
PMID:17286128 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3708 |
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| Author |
Boden, L.A.; Anderson, G.A.; Charles, J.A.; Morgan, K.L.; Morton, J.M.; Parkin, T.D.H.; Slocombe, R.F.; Clarke, A.F. |
| Title |
Risk of fatality and causes of death of Thoroughbred horses associated with racing in Victoria, Australia: 1989-2004 |
Type |
Journal Article |
| Year |
2006 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
38 |
Issue |
4 |
Pages |
312-318 |
| Keywords |
Animals; Athletic Injuries/epidemiology/mortality/*veterinary; *Cause of Death; Female; *Floors and Floorcoverings; Horses/*injuries; Male; Physical Conditioning, Animal/*adverse effects; Risk Factors; Running/injuries; Safety; Sports; Victoria |
| Abstract |
REASONS FOR PERFORMING STUDY: Determining the risk of fatality of Thoroughbred horses while racing is essential to assess the impact of intervention measures designed to minimise such fatalities. OBJECTIVES: To measure the risk of racehorse fatality in jump and flat starts on racecourses in Victoria, Australia, over a 15 year period and to determine proportional mortality rates for specific causes of death. METHODS: All fatalities of Thoroughbred horses that occurred during or within 24 h of a race were identified from a database. The risk of a start resulting in a racehorse fatality in all races and within flat and jump races, proportional mortality rates, population attributable risk, population attributable fraction and risk ratios were calculated along with 95% confidence intervals. Poisson regression was also performed to estimate risk ratios. RESULTS: There were 514 fatalities over the 15 year period; 316 in flat races and 198 in jump races. The risk of fatality was 0.44 per 1000 flat starts and 8.3 per 1000 jump starts (18.9 x greater). The risk of fatality on city tracks was 1.1 per 1000 starts whereas on country tracks it was 0.57 per 1000 starts. Of the 316 fatalities in flat races, 73.4% were due to limb injury, 2.5% to cranial or vertebral injury and 19.0% were sudden deaths. Of the 198 fatalities in jump races, 68.7% were due to limb injury, 16.2% to cranial or vertebral injury and 3.5% were sudden deaths. The risk of fatality in flat starts increased between 1989 and 2004 but the risk in jump starts remained unchanged over the 15 year period. CONCLUSIONS: The risk of fatality in flat starts was lower in Victoria than North America and the UK but the risk in jump starts was greater. Catastrophic limb injury was the major reason for racehorse fatality in Victoria but there was a larger percentage of sudden deaths than has been reported overseas. The risk of fatality in jump starts remained constant over the study period despite jump racing reviews that recommended changes to hurdle and steeple races to improve safety. POTENTIAL RELEVANCE: This study provides important benchmarks for the racing industry to monitor racetrack fatalities and evaluate intervention strategies. |
| Address |
Department of Veterinary Science, The University of Melbourne, Werribee, Victoria, Australia |
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English |
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| ISSN |
0425-1644 |
ISBN |
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| Notes |
PMID:16866197 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3761 |
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| Author |
Balakrishnan, G.; Hu, Y.; Spiro, T.G. |
| Title |
Temperature-jump apparatus with Raman detection based on a solid-state tunable (1.80-2.05 microm) kHz optical parametric oscillator laser |
Type |
Journal Article |
| Year |
2006 |
Publication |
Applied Spectroscopy |
Abbreviated Journal |
Appl Spectrosc |
| Volume |
60 |
Issue |
4 |
Pages |
347-351 |
| Keywords |
Animals; Cytochromes c/analysis; Horses; Lasers; Myoglobin/metabolism; Spectrum Analysis, Raman/*instrumentation/*methods; *Temperature |
| Abstract |
The operating characteristics of a pulsed (10 ns) tunable near-infrared (NIR) laser source are described for temperature-jump (T-jump) applications. A Q-switched Nd:YLF laser (approximately 10 ns pulses) with a 1 kHz repetition rate is used to pump a potassium titanyl arsenate (KTA) crystal-based optical parametric oscillator (OPO), producing approximately 1 mJ NIR pulses that are tunable (1.80-2.05 microm) across the 1.9 microm vibrational overtone band of water. This T-jump source has been coupled to a deep ultraviolet (UV) probe laser for Raman studies of protein dynamics. T-jumps of up to 30 degrees C, as measured via the O-H stretching Raman band of water, are readily achieved. Application to cytochrome c unfolding is demonstrated. |
| Address |
Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA |
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English |
Summary Language |
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| ISSN |
0003-7028 |
ISBN |
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| Notes |
PMID:16613628 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
3764 |
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| Author |
Bouchet, A. |
| Title |
[Anatomy lessons on animals] |
Type |
Journal Article |
| Year |
2006 |
Publication |
Histoire des Sciences Medicales |
Abbreviated Journal |
Hist Sci Med |
| Volume |
40 |
Issue |
4 |
Pages |
331-338 |
| Keywords |
Anatomy/education/*history; Animals; Dissection/history; Education, Medical/history; Education, Veterinary/*history; France; History, 16th Century; History, 17th Century; History, 18th Century; History, 19th Century; History, 20th Century; Humans; Schools, Veterinary/history |
| Abstract |
The first anatomical studies were realized on the animal by Galen and Vesalius. Bourgelat created the first veterinarian school in Lyons, then in Paris where the famous dissection of a man on his horse can be seen (Fragonard). The Lafosse dynasty was interested in the study of the horse care and the painter Sollier showed the most beautiful coloured engravings about the horses. A chair of anatomy was created to compare the human and animal anatomy by the school of Jardin des Plantes en 1855. |
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French |
Summary Language |
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Original Title |
Les lecons d'anatomie sur les animaux |
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Series Issue |
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Edition |
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| ISSN |
0440-8888 |
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| Notes |
PMID:17526401 |
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no |
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Equine Behaviour @ team @ |
Serial |
4000 |
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