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Showing papers in "Animal Behaviour in 1987"


Journal ArticleDOI
TL;DR: It is generally believed that the teacher is the nation builder as mentioned in this paper, and therefore it is important that these same issues be addressed with access to the necessary resources or controls for small business.

970 citations


Journal ArticleDOI
TL;DR: In this paper, the authors examined several indices used to measure the frequency of association between individuals in fission/fusion societies, under specific conditions likely to be encountered in field studies of animal behaviour.

774 citations



Journal ArticleDOI
TL;DR: A review of paul related measuring behaviour can be found in this article, where an introductory guide to measuring behaviour is presented. But the authors do not provide a review of the other aspects of measuring behavior.

580 citations


Journal ArticleDOI
TL;DR: Light intensity and predation had significant effects on male courtship behaviour in guppies and reduced the need for an evolutionary compromise between colour patterns that reduce the risk of visual predation and those that increase visibility to females.

452 citations


Journal ArticleDOI
TL;DR: Gravitational flow-through systems were used to determine whether larvae of two-lined salamanders, Eurycea bislineata, and Cope's grey treefrog, Hyla chrysoscelis, use chemical cues to detect predatory fish, and suggest that amphibian larvaeUse chemical cues in their natural habitats to minimize predation risk from fish.

390 citations


Journal ArticleDOI
TL;DR: Results on Drosophila in the field confirm and extend those previously obtained in the laboratory, and in both species larger males delivered more courtship and in D. pseudoobscura they won more aggressive encounters.

310 citations


Journal ArticleDOI
Alan Grafen1
TL;DR: Divisive asymmetries that create consistent losers of this sort are termed divisive as follows as mentioned in this paper : if the winning of contests plays a major part in gaining reproductive success, an individual will not be selected to respect an asymmetry which will place it always in the losing role.

302 citations


Journal ArticleDOI
TL;DR: The relation of patterns of variation in badge size to dominance was studied in male house sparrows, Passer domesticus, and males with large badges were more dominant in winter flocks, irrespective of age, body size and body condition index.

290 citations


Journal ArticleDOI
TL;DR: This chapter discusses the breeding activities of the little redfish, a landlocked form of the sockeye salmon, Oneorhynchus nerka, and the spawning behaviour of chum salmon and rainbow trout.

282 citations


Journal ArticleDOI
TL;DR: For some reasons, this the ontogeny of information developmental systems and evolution science and cultural theory tends to be the representative book in this website.

Journal ArticleDOI
TL;DR: Juvenile Atlantic salmon changed their foraging strategy markedly after a brief exposure to a model trout predator, in ways that reduced their conspicuousness and hence risk of being preyed upon.

Journal ArticleDOI
TL;DR: The results suggest that scramble competition between males to deliver courtship is important in determining mating success, but not that females discriminate between males of different sizes.

Journal ArticleDOI
TL;DR: This paper found that flock size is determined by the stable outcome to the dominant-subordinate conflict rather than by a solution that is optimal to all members, and that flock sizes are determined by a stable outcome of the dominant subgroup's conflict.

Journal ArticleDOI
TL;DR: In a population of elephants with known lineages and calf ages, interactions between calves and other elephants were found to be frequent and consisted of either relaxed, friendly greetings and investigations of others or assistance when calves were threatened or distressed.

Journal ArticleDOI
TL;DR: Of 257 offspring sampled in the 2 years, 37 (14·4%) had genotypes incompatible with one of the putative parents, which suggests that intraspecific egg parasitism did not occur, all of these offspring probably came from successful extra-pair copulations.

Journal ArticleDOI
TL;DR: The asynchronous arrival pattern may leave some early-arriving swallows in a deteriorating breeding condition because the local food resource has to be divided between more individuals.

Journal ArticleDOI
TL;DR: This paper showed that domestic chicks learn more effectively to avoid distasteful prey if the prey in question is conspicuously coloured than when it is not conspicuous. But it was not known whether conspicuousness affects strength of learning directly, or whether differences in learning stem from differences in initial encounter rate (conspicuous prey being detected more easily and hence ingested more frequently by a naive predator).

Journal ArticleDOI
TL;DR: This article showed that pigeons who shared the food discoveries of others (scroungers) did not learn the food-finding technique used by the discoverers (producers).

Journal ArticleDOI
TL;DR: In contrast to the gradual decline in activity performance observed in the home cages, this rebound was virtually instantaneous and the possibilities are discussed that this rebound may result either from an increase in motivational tendency during the period of spatial restriction or from a response to an increased in novelty.

Journal ArticleDOI
TL;DR: It is suggested that the female, in selecting a male with a high song rate, in fact may select either the food content of his territory and/or the quality of the male directly, which indicates that song rate is limited by food resources.

Journal ArticleDOI
TL;DR: Peromyscus females exhibited a rigid ‘all-or-nothing’ reproductive response, typically increasing their feeding effort to support large litters, whereas Mus females eliminated pups to stabilize the energy burdens of lactation.

Journal ArticleDOI
TL;DR: It is concluded that safety monopolization was the predominant mode of competition among the females caused by the monopolization of clumped food within the main party by high-ranking females.

Journal ArticleDOI
TL;DR: In this paper, the idea that costly deviations from optimality should be rare is combined with a psychological choice principle to yield a general framework for sub-optimal choice, and when reward rate is maximized subject to the limitations of the choice principle, partial preferences are observed.

Journal ArticleDOI
TL;DR: The mating behaviour of indigo buntings, Passerina cyanea was studied and the possible role of nesting density, mate guarding, synchrony of breeding, male parental care and polygyny on the rate of EPCs is examined.

Journal ArticleDOI
TL;DR: Results are consistent with the ‘sibling rivalry reduction hypothesis’ for the evolution of hatch asynchrony, wherein parents are predicted to create sufficient inequities among offspring to allow the formation of a stable feeding hierarchy (and the potential for efficient brood reduction) without wasting offspring energy unnecessarily on sibling rivalry.

Journal ArticleDOI
TL;DR: It is shown that floaters intrude selectively against particular males, and that the ability to defend a territory against floaters first increases and then decreases with age in male song sparrows.

Journal ArticleDOI
TL;DR: There was intercolonial variation in all aspects of the ontogeny of guarding and in allocation of workers to guarding and this variation is discussed in the light of other studies of variation in worker behaviour.

Journal ArticleDOI
TL;DR: In zebra finches raised by their mother alone behavioural differences between song tutors appeared to be important in tutor choice: youngsters preferred to learn from the tutor who was most aggressive towards them.

Journal ArticleDOI
TL;DR: Defence of food cups by males of the fruiflies Drosophila melanogaster and D. simulans was examined in the laboratory, and territorial males were more successful in mating than non-territorial males.