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| Author |
Heyes CM |
| Title |
Self-recognition in primates: irreverence, irrelevance and irony |
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Journal Article |
| Year |
1996 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
51 |
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Pages |
470 |
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Equine Behaviour @ team @ |
Serial |
3007 |
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| Author |
Mason, W.A.; Hollis, J.H. |
| Title |
Communication between young rhesus monkeys |
Type |
Journal Article |
| Year |
1962 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
10 |
Issue |
3-4 |
Pages |
211-221 |
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| Abstract |
1. 1. The communication performance of 12 rhesus monkeys was investigated in a situation in which the rewards of both members of a pair of monkeys could not exceed chance levels unless the operator monkey responded to cues provided by the informant monkey which indicated the location of food. Each member of the pair was trained in both operator and informant roles in different phases of the experiment. Communication performance improved progressively to levels consistently above chance. However, communication learning appeared to be specific to the role in which the individual was trained, and when roles were reversed no evidence of transfer was obtained. Tests of foodsharing behaviour showed a substantial increase in the tendency to share food with the partner following communication training. This occurred however, only when the partner was the only social stimulus present; if another monkey was also present there was no evidence of preferential responses to the partner. In all phases of communication training, monkeys which were housed together performed more efficiently than did monkeys housed individually.2. 2. The acquisition of stimulus-producing responses was investigated by causing an opaque screen to remain in front of the informant unless the operator monkey pulled a vertical lever at the front of its restraining cage. Initially, operators responded immediately to the foodcarts, but with further testing there was a steady increase in the tendency to defer the response to the food-carts until the lever had been pulled, revealing the informant monkey.3. 3. Transfer of communication training was tested with new monkey informants, and with two inanimate stimuli, a mechanical puppet, and a stationary plaque. The latter two objects were placed behind the rewarded food-carts before each trial. There was clear evidence of positive transfer to each of these conditions, but marked differences among conditions were obtained. Performance with the monkeys averaged 76 per cent. correct, as compared with 62 and 40 per cent., with the puppet and the plaque, respectively.4. 4. To test the ability of trained operator monkeys to select the appropriate informant on the basis of behavioural cues, the communication situation was arranged so that two informant monkeys were present on all trials. However, on any trial only one of these informants could be rewarded, and the operator's rewards were contingent upon delivering food to this informant. Efficiency of discrimination began at approximately 45 per cent, (chance = 25 per cent. and improved progressively to levels above 75 per cent. |
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Equine Behaviour @ team @ |
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3017 |
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| Author |
Mitchell R |
| Title |
Self-recognition, methodology and explanation: a comment on Heyes (1994) |
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Journal Article |
| Year |
1995 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
51 |
Issue |
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467 |
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Equine Behaviour @ team @ |
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3020 |
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| Author |
Povinelli DJ; Gallup GG; Eddy TJ; Bierschwale DT; Engstrom MC |
| Title |
Chimpanzees recognize themselves in mirrors |
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Journal Article |
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1997 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
53 |
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1083 |
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Equine Behaviour @ team @ |
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3029 |
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| Author |
Povinelli DJ; Nelson KE; Boysen ST |
| Title |
Comprehension of role reversal in chimpanzees: evidence of empathy? |
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Journal Article |
| Year |
1992 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
43 |
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633 |
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Equine Behaviour @ team @ |
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3031 |
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| Author |
Hauser MD; Kralik J; Botto-Mahan C |
| Title |
Problem solving and functional design features: experiments on cotton-top tamarins, Saguinus oedipus oedipus |
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Journal Article |
| Year |
1999 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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57 |
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565 |
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Equine Behaviour @ team @ |
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3065 |
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| Author |
Hauser MD; Pearson H; Seelig D |
| Title |
Ontogeny of tool use in cottontop tamarins, Saguinus oedipus: innate recognition of functionally relevant features |
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Journal Article |
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2002 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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64 |
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299 |
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Equine Behaviour @ team @ |
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3066 |
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| Author |
Hauser MD; Santos LR; Spaepen GM; Pearson HE |
| Title |
Problem solving, inhibition and domain-specific experience: experiments on cotton-top tamarins, Saguinus oedipus |
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Journal Article |
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2002 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
64 |
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387 |
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Equine Behaviour @ team @ |
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3067 |
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| Author |
Nicol, C.J.; Badnell-Waters, A.J. |
| Title |
Suckling behaviour in domestic foals and the development of abnormal oral behaviour |
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Journal Article |
| Year |
2005 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
70 |
Issue |
1 |
Pages |
21-29 |
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We investigated how the behaviour of domestic foals, Equus caballus, living at pasture with their dams was associated with foal gender, mare rank and the development of abnormal oral behaviour, both during the preweaning period, and over a period of up to 4 years postweaning. A population of 186 foals belonging to private owners and commercial studs was studied. The behaviour of male and female foals hardly differed, but mare rank affected patterns of foal social interaction and suckling behaviour, with foals of subordinate mares involved in more affiliative interactions. These foals also spent more time in perisuckling activities such as teat nuzzling than foals of other mares. During the study, 18 foals developed abnormal oral behaviour before weaning and 42 foals developed abnormal oral behaviour after weaning. The development of abnormal oral behaviour was associated with suckling behaviour in a variety of ways. Foals that had already developed abnormal oral behaviour at the time of the preweaning observations were involved in more suckling terminations within bouts than normal foals or foals that developed future abnormal behaviour, and pushing the udder with the muzzle was most frequent in these foals. Foals that had no current abnormal oral behaviour, but that would develop this in the future, spent more time suckling and twice as much time teat nuzzling as other foals. The results add to the growing evidence of associations between digestive function and abnormal oral behaviour in horses. |
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Equine Behaviour @ team @ |
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3631 |
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Pavey, C.R.; Smyth, A.K. |
| Title |
Effects of avian mobbing on roost use and diet of powerful owls,Ninox strenua |
Type |
Journal Article |
| Year |
1998 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
55 |
Issue |
2 |
Pages |
313-318 |
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We observed the species and numbers of mobbing birds and their effects on a large, nocturnal, bird-eating predator, the powerful owl, together with the pattern of owl predation on mobbing and non-mobbing species. Owls were mobbed on 35 occasions by seven of 44 species of forest birds at a site composed of open forest (88% by area) and rainforest (12%). The majority of bouts involved individuals of a single species, although mixed groups were observed on nine occasions. Regular mobbers were between 4 and 26% of the owls' body weight. Owls abandoned their daytime roosts during 20% of bouts and responded by calling or actively monitoring mobbers during 54% of bouts. Mobbing appeared to explain why owls roosted in rainforest significantly more often than expected by its availability, mobbing being significantly less frequent in rainforest than in open forest. Only one mobbing species regularly occupied rainforest and the canopy of roosts in rainforest was denser than that in open forest, thus reducing the chances of an owl being detected by potential mobbers. Twelve species of forest birds were within the range of prey size of the powerful owl (75-800 g): six were mobbers and six non-mobbers. The frequency of owl predation on non-mobbers was 8.75 times that on mobbers. The species in this study took a high risk by mobbing a very large predator, but benefited by greatly reducing their chances of predation. |
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Equine Behaviour @ team @ |
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4090 |
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