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Byrne, R., & Whiten, A. (1988). The machiavellian intelligence hypothesis:Editorial. In Machiavellian Intelligence (pp. 1–9). Oxford: Oxford Univ Press.
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Huff, A. N. (1988). Winter Manegement. Journal of Equine Veterinary Science, 8(1), 81.
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Huff, A. N. (1988). Safety. Journal of Equine Veterinary Science, 8(1), 81.
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Bednarz, J. C. (1988). Cooperative Hunting Harris' Hawks (Parabuteo unicinctus). Science, 239(4847), 1525–1527.
Abstract: 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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Hauser M.D. (1988). Invention and social transmission: new data from wild vervet monkeys. In Machiavellian Intelligence (pp. 327–343). Oxford: Oxford Univ Press.
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Cheney, D. L., & Seyfarth, R. M. (1988). Social and non.social knowledge in vervet monkeys. In Machiavellian Intelligence (pp. 255–270). Oxford: Oxford Univ Press.
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Dasser V. (1988). Mapping social concepts in monkeys. In Machiavellian Intelligence (pp. 85–93). Oxford: Oxford Univ Press.
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Hayes, K. (1988). Temperament tip-offs. Horse and Rider, 11, 47–84.
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Clutton-Brock, T. H., Green, D., Hiraiwa-Hasegawa, M., & Albon, S. D. (1988). Passing the buck: resource defence, lek breeding and mate choice in fallow deer. Behav. Ecol. Sociobiol., 23, 281–296.
Abstract: lsquoLekrsquo breeding systems, where males defend small, clustered mating territories, are thought to occur where the distribution of females is heavily clumped but males are unable to defend resources used by females. In this paper, we describe a breeding system in fallow deer where males are able to defend resources used by females but the most successful bucks instead defend small territories on a traditional mating ground; where the lek is sited in an area not heavily used by females at other times of year and is visited primarily by females in or close to oestrus; and where mating success on the lek is related to territory position and to male phenotype but not to the resources available on different lek territories. Comparisons with other ungulates suggest that lek breeding species fall into two groups: those where leks are regularly visited by herds of females many of which are not in oestrus and those, like fallow deer, where leks are visited primarily by oestrous females. In the latter species, it is unlikely that females visit the lek for ecological reasons.
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Leonard, M. L., Horn, A. G., & Eden, S. F. (1988). Parent-offspring aggression in moorhens. Behav. Ecol. Sociobiol., 23, 265–270.
Abstract: The purpose of this study was to explain parental aggression to offspring in the moorhen (Gallinula chloropus). Males and females did not feed different subsets of chicks. In addition, there was a positive correlation between feeding rates of each parent to a particular chick and the number of attacks (tousles) directed to that chick, contrary to what was expected if aggression served to divide the brood. In moorhens, large chicks outcompeted small chicks for parental feedings. However, adults were more aggressive to large chicks and as a result small chicks spent significantly more time closer to parents and received more feedings than large chicks. In 84% of broods every chick was attacked at least once, although large chicks were attacked more often than small chicks. The behaviour of chicks changed immediately after an attack (Table 2). Before an attack chicks were <1 m from the parents while after an attack they were >1 m. The apparent effect of parental aggression in moorhens is to reduce demands by chicks for feedings. Aggression appears to reduce sibling competition and to encourage chick independence.
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