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Franke Stevens E,. (1988). Contents between bands of feral horses for access to fresh water: the resident wins. Anim Beh, 36(6), 1851–1853.
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Ryder, O. A., & Massena, R. (1988). A case of male infanticide in Equus przewalskii. Appl. Anim. Behav. Sci., 21(1-2), 187–190.
Abstract: Following the introduction of a new stallion to a band of E. przewalskii mares two births, both of male foals, resulted in foal death due to injuries sustained in the first day of life. Neither foal was sired by the new herd stallion. The second foal death was the results of an observed attack on the newborn male and is described here. Subsequently births in the same enclosure and, in one instance, to the same mare whose previous foal was killed, were of foals sired by the new stallion and were uneventful, with 3 male foals surviving to date.
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Brennan, J., & Anderson, J. (1988). Varying responses to feeding competition in a group of rhesus monkeys (Macaca mulatta). Primates, 29(3), 353–360.
Abstract: The behaviour of members of a group of rhesus monkeys was observed in experimentally created, competitive feeding situations. Socially dominant members of the group tended to start eating before lower-ranking subjects, and generally ate more. Dominants sometimes used aggression to control access to food, but overall, intermediate-ranking monkeys were involved in most agonistic episodes. Non-dominant subjects improved their feeding performance when food was presented in three piles rather than one pile, often by snatching food and consuming it away from the pile. These general patterns were less evident when realistic snake models were placed on some of the food piles. Feeding was disrupted by the presence of snakes, but notably, subordinates risked feeding in these conditions. Piles containing preferred foods and snakes were eaten from, but a low-preference food (carrot) under snakes went untouched by all subjects. The results suggest that group-members evaluate potential risks and benefits of competing for a restricted resource, and that dominance status, while an important factor, is only one element in the equation.
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Houston, A. I., & McNamara, J. M. (1988). Fighting for food: a dynamic version of the Hawk-Dove game. Evol. Ecol., 2(1), 51–64.
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Ginsberg, J. R. (1988). Social organisation and mating strategies of an arid adapted equid: The Grevy`s zebra. Ph.D. thesis, Princeton University, Princeton.
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Boyd, L.,. (1988). The behavior of Przewalski's horses. Ph.D. thesis, , Cornell University.
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Houpt Ka, H. T. (1988). Social and illumination preferences of mares. J Anim Sci, 66, 2159–2164.
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KIRKPATRICK JF et al,. (1988). Pregnancy determination in uncaptured feral Horses based on steroid metabolites in urine – soaked snow and free steroids in feces.
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KOTERBA AM et al,. (1988). Brathing strategy of the adult horse at rest. J Appl Physiol, 64, 337–346.
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Penzhorn Bl,. (1988). Equus zebra. Mammalian Species, 314, 1–7.
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