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Crowell-Davis, S.; Houpt, K.A. |
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Title |
The ontogeny of flehmen in horses |
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Journal Article |
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Year |
1985 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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33 |
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3 |
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739-745 |
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Flehmen behaviour in Welsh pony (Equus caballus) mares and foals living on pasture was observed during 807 h of focal sampling. A series of flehmens performed at one site was defined as a flehmen incident. Colts exhibited flehmen incidents and performed flehmen more frequently during an incident than did fillies or mares. Filies exhibited flehmen incidents more frequently than did mares, but did not flehmen more frequently during an incident. Colts exhibited a peak frequency of performing flehmen and of flehmen incidents during weeks 1-4 with a subsequent linear decrease in frequency up to weeks 17-20. Usually, flehmen occurred without the subject having had direct contact of the nostrils, lips, or tongue with a possible stimulant. Twenty-six per cent of the flehmen incidents occurred during or after urination by another pony. Seven per cent of the incidents occurred during or after urination by the pony showing flehmen. |
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Equine Behaviour @ team @ |
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2261 |
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Author |
Inglis, I. |
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Title |
H.L. Roitblat, T.G. Bever and H.S. Terrace, Editors, Animal Cognition, Lawrence Erlbaum, New Jersey (1984), p. 682 |
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Journal Article |
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Year |
1985 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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33 |
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1 |
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344-345 |
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Equine Behaviour @ team @ |
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2924 |
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Author |
Eccles, T.R.; Shackleton, D.M. |
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Title |
Correlates and consequences of social status in female bighorn sheep |
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Journal Article |
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Year |
1986 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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34 |
Issue |
5 |
Pages |
1392-1401 |
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Dominance-subordinance relationships among a captive group of adule bighorn sheep (Ovis canadensis californiana) were studied from May 1977 to December 1978. Social interactions between females were brief in duration and infrequent. Although a dominance hierarchy was evident among the females, it was not linear. Horn length and body weight were not consistently correlated with social status. The highest ranking females were the most aggressive individuals, initiating more agonistic interactions than subordinates. Females with high social status did not have higher quality diets, lower activity costs, or higher productivity than low ranking females. |
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refbase @ user @ |
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753 |
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Thouless, C.R.; Guinness, F.E. |
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Title |
Conflict between red deer hinds: the winner always wins |
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Year |
1986 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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34 |
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4 |
Pages |
1166-1171 |
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Dominance relations between free-living, female red deer (hinds) (Cervus elaphus L.) on the Isle of Rhum, Scotland, were investigated. Most interactions were won by the older hind of the pair and this was the case even when both individuals had reached full body size. The younger hind was more likely to be the winner if the conflict was escalated or if the two hinds were strangers, in which case escalation was more frequent than usual. When outside their normal home range, older hinds were much more likely to lose, and younger ones more likely to win, than usual. These results can be best explained by the hinds using previous experience as a cue for conventional resolution of conflict, with the result that dominance relationships established early in life are perpetuated. No such cue is available if the hinds have not previously met. |
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refbase @ user @ |
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868 |
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Author |
Cheney, D.L.; Seyfarth, R.M. |
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Title |
The recognition of social alliances among vervet monkeys |
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1986 |
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Animal Behaviour. |
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Anim. Behav. |
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34 |
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1722-1731 |
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Equine Behaviour @ team @ |
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4864 |
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Author |
Kacelnik, A. |
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Title |
Information primacy or preference for familiar foraging techniques? A critique of Inglis & Ferguson |
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Journal Article |
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Year |
1987 |
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Animal Behaviour. |
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Anim. Behav. |
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35 |
Issue |
3 |
Pages |
925-926 |
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2121 |
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Author |
Giraldeau, L.-A.; Lefebvre, L. |
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Title |
Scrounging prevents cultural transmission of food-finding behaviour in pigeons |
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Journal Article |
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Year |
1987 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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35 |
Issue |
2 |
Pages |
387-394 |
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Living in groups should promote the cultural transmission of a novel behaviour because opportunities for observing knowledgeable individuals are likely to be more numerous in this condition. However, in this study pigeons who shared the food discoveries of others (scroungers) did not learn the food-finding technique used by the discoverers (producers). Individually-caged pigeons prevented from scrounging easily learned the technique from a conspecific tutor. When caged pigeons obtained food from the tutor's performance, most naïve observers failed to learn. In a flock, scroungers selectively followed producers. In individual cages, scrounging during the tutor's demonstration was equivalent to getting no demonstration at all. This effect of scrounging did not interfere with subsequent acquisition of the food-finding behaviour when scrounging was no longer possible. |
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0003-3472 |
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Equine Behaviour @ team @ |
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5265 |
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Author |
Walker, S. |
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An introduction to animal cognition : By . Hillsdale, New Jersey: Lawrence Erlbaum (1988). Pp. viii + 328. Price [pound sign]8.95 paperback |
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Journal Article |
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1989 |
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Animal Behaviour. |
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Anim. Behav. |
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37 |
Issue |
Part 3 |
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521-522 |
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Equine Behaviour @ team @ |
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2922 |
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Author |
Cassini, M.H.; Kacelnik, A.; Segura, E.T. |
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Title |
The tale of the screaming hairy armadillo, the guinea pig and the marginal value theorem |
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Journal Article |
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1990 |
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Animal Behaviour. |
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Anim. Behav. |
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39 |
Issue |
6 |
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1030-1050 |
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Foraging by screaming hairy armadillos, Chaetophractus vellerosus, and guinea pigs, Cavia porcellus, was studied in the laboratory. The main question was whether patch exploitation varies with overall capture rate as predicted by the marginal value theorem (MVT). Armadillos in experiment I and guinea pigs in experiment II experienced a single travel time between depleting patches of two kinds: good and poor. There were two treatments, which differed in the quality of poor patches. MVT predicts that within a treatment, more prey should be taken from good than from poor patches and between treatments, good patches should be exploited in inverse relation to the quality of poor patches and poor patches should be exploited in direct relation to their own quality. In experiment III, guinea pigs experienced three treatments which differed in the travel requirement, while the two patch types remained the same. MVT predicts that within a treatment more prey should be taken from good than from poor patches and that between treatments more prey should be taken from both patch types as travel requirement increases. The qualitative predictions were supported in the three experiments. The quantitative fit was good but there was a bias towards more severe patch exploitation than predicted. The results indicate that in these species patch exploitation depends on overall food availability as predicted by the MVT when overall food availability differs either because of patch type composition or because of differences in travel requirement between patches. |
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2120 |
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Pettifor, R.A. |
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The effects of avian mobbing on a potential predator, the European kestrel, Falco tinnunculus |
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1990 |
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Animal Behaviour. |
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Anim. Behav. |
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39 |
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5 |
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821-827 |
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European kestrels were observed being mobbed by other birds on 63 occasions. Eleven species were involved, and in two instances mobs were composed of more than one species. Both flight-hunting and perch-hunting kestrels flew significantly further between their foraging positions when they were mobbed than when they were not mobbed; on average, mobbing resulted in flight-hunting kestrels moving 6[middle dot]8 times, and perch-hunting kestrels 2[middle dot]7 times, the mean distances moved by non-mobbed birds. The mean strike distance of perch-hunting kestrels attempting to capture birds was significantly less than the distance between perches flown by perch-hunting kestrels when mobbed. These data provide quantitative support for the assumption that mobbing causes a predator to vacate its immediate foraging area. The activity of the kestrels also influenced the frequency that they were mobbed, with kestrels that were flight-hunting being mobbed more than expected compared with ones that were perch-hunting. Kestrels were observed being mobbed throughout the year, and there was no discernible difference in their response to mobbing between seasons. These results are discussed in relation to current ideas on the functions of avian mobbing. |
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Equine Behaviour @ team @ |
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4091 |
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