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Smuts, M.M.S.; Penzhorn, B. L. |
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Descriptions of antomical differences between skulls and mandibles of Equus zebra and E. burchelli from southern Africa |
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1988 |
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South African Journal of Zoology |
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South African Journal of Zoology |
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23 |
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(4)3 |
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328-336 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1617 |
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Author |
Boyd, L.E.; Carbonaro, D.A.; Houpt, K.A. |
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Title |
The 24-hour time budget of Przewalski horses |
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Journal Article |
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Year |
1988 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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21 |
Issue |
1-2 |
Pages |
5-17 |
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A herd of 8 Przewalski horses were observed on pasture in summer. Fifteen-minute focal animal samples were used to determine the time budget of the horses during the periods 00.00-04.00, 04.00-08.00, 08.00-12.00, 12.00-16.00, 16.00-20.00 and 20.00-24.00 h EDT. The behavioral states recorded were feeding (grazing and eating grain), nursing, drinking, standing, stand-resting, self-grooming, mutual grooming, locomoting, playing, and lying laterally and sternally. The average number of behavioral states occurring per hour, and the defecation, urination, aggression and vocalization rates were also determined. Overall, the horses spent 46.4 +/- 5.9% of their time feeding, 1.3 +/- 0.1% nursing, 0.5 +/- 0.1% drinking, 20.6 +/- 5.4% standing, 15.7 +/- 3.2% stand-resting, 1.7 +/- 0.2% self-grooming, 2.2 +/- 0.7% mutual grooming, 7.4 +/- 1.0% locomoting, 1.2 +/- 0.3% playing, 1.2 +/- 0.5% lying laterally and 4.1 +/- 3.0% lying sternally. The horses averaged 45.2 +/- 5.8 behavioral states per hour, and 0.2 +/- 0.0 defecations, 0.3 +/- 0.0 urinations, 1.5 +/- 0.3 aggressions and 0.7 +/- 0.1 vocalizations per hour. The horses spent the greatest amount of time foraging between 20.00 and 04.00 h, when the temperatures were lower. They spent 68.2 +/- 2.2% of their time between 20.00 and 24.00 h feeding, but only 31.2 +/- 2.1% of their time feeding between 08.00 and 12.00 h. Recumbent rest was most common between 00.00 and 04.00 h. As temperatures rose during the daylight hours, the horses spent more time drinking and standing, rather than grazing. Stand-resting was the most common form of rest during the day. The horses exhibited the greatest number of activities per hour from 08.00 to 20.00 h. While standing in close proximity to one another during these hours, the horses exhibited the highest number of aggressions per hour (1.9-2.4). |
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1805 |
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Author |
Boyd, L.E. |
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Title |
Ontogeny of behavior in Przewalski horses |
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Journal Article |
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Year |
1988 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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21 |
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1-2 |
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41-69 |
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Twelve colts and 12 fillies were observed during their first 2 years of life. Data on the foal's nearest neighbor, distance to dam and stallion, and time budget were compiled by age. The birth of one foal was witnessed. During their first month of life, Przewalski foals were dependent on the dam. She provided most of their nourishment and foals spent 54% of their time within 1 m of her. The biggest change in behavior of foals occurred between Months 1 and 2. The amount of time spent resting and nursing declined, while the amount of time spent foraging increased sharply. Foals began to leave their mothers and interact with peers by 3 weeks of age, and at 2 months they were interacting with older herd members. By 5 months of age, the amount of time spent in most behaviors was identical to that of adults, except that vocalization rates and involvement in aggression were lower than for adults. Juveniles spent less time stand-resting than adults throughout their first year, but more time in recumbent rest. Foals spent far less time with their sire than with their dam. However, an orphaned foal spent more time with his sire than did mothered foals, indicating that the sire assumed part of the role of the missing dam. |
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2018 |
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Author |
Berger, J, |
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Title |
Social systems, resources, and phylogenetic inertia: an experimental test and its limitations |
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Year |
1988 |
Publication |
Ecology of Social Behavior |
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157-186 |
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Academic Press |
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San Diego |
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Slobochikoff, C.N. |
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Ecology of Social Behavior |
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Equine Behaviour @ team @ |
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2234 |
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Author |
Byrne, Richard; Whiten, Andrew |
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Title |
Machiavellian Intelligence |
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1988 |
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This book presents an alternative to conventional ideas about the evolution of the human intellect. Instead of placing top priority on the role of tools, the pressure for their skillful use, and the related importance of interpersonal communication as a means for enhanced cooperation, this<BR>volume explores quite a different idea-- that the driving force in the evolution of human intellect was social expertise--a force which enabled the manipulation of others within the social group, who themselves are seen as posing the most challenging problems faced by primitive humans. The need to<BR>outwit one's clever colleagues then produces an evolutionary spiraling of “Machiavellian intelligence.” The book forms a complete and self-contained text on this fast-growing topic. It includes the origins of the basic premise and a wealth of exciting developments, described by an international<BR>team of authors from the fields of anthropology, psychology, and zoology. An evaluation of more traditional approaches is also undertaken, with a view to discovering to what extent Machiavellian intelligence represents a complementary concept or one that is truly an alternative. Readers and<BR>students will find this fascinating volume carries them to the frontiers of scientific work on the origin of human intellect. |
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Oxford Univ Press |
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Oxford |
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0-19-852175-8 |
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Equine Behaviour @ team @ |
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4412 |
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Author |
Byrne, Richard; Whiten, Andrew |
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Title |
The machiavellian intelligence hypothesis:Editorial |
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Book Chapter |
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1988 |
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Machiavellian Intelligence |
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1-9 |
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Oxford Univ Press |
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Oxford |
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0-19-852175-8 |
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Equine Behaviour @ team @ |
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4430 |
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Author |
Huff, A.N. |
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Title |
Winter Manegement |
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1988 |
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Journal of Equine Veterinary Science |
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8 |
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1 |
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81-81 |
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Equine Behaviour @ team @ |
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4668 |
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Author |
Huff, A.N. |
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Safety |
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Journal Article |
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1988 |
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Journal of Equine Veterinary Science |
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8 |
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1 |
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81-81 |
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Equine Behaviour @ team @ |
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4669 |
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Author |
Bednarz, J.C. |
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Title |
Cooperative Hunting Harris' Hawks (Parabuteo unicinctus) |
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1988 |
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Science |
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Science |
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239 |
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4847 |
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1525-1527 |
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Coordinated hunting by several individuals directed toward the capture and sharing of one Large prey animal has been documented convincingly only for a few mammalian carnivores. In New Mexico, Harris' hawks formed hunting parties of two to six individuals in the nonbreeding season. This behavior improved capture success and the average energy available per individual enabled hawks to dispatch prey larger than themselves. These patterns suggest that cooperation is important to understanding the evolution of complex social behavior in higher vertebrates and, specifically, that benefits derived from team hunting a key factor in the social living of Harris' hawks. |
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10.1126/science.239.4847.1525 |
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Equine Behaviour @ team @ |
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4717 |
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Author |
Hauser M.D |
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Title |
Invention and social transmission: new data from wild vervet monkeys |
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Book Chapter |
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1988 |
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Machiavellian Intelligence |
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327-343 |
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Oxford Univ Press |
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Oxford |
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0-19-852175-8 |
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Equine Behaviour @ team @ Byrne1988 |
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4794 |
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