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Author |
Kacelnik, A. |
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Title |
The foraging efficiency of great tits (Parus major L.) in relation to light intensity |
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1979 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
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Part 1 |
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237-241 |
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I report an experiment aimed at testing whether foraging efficiency of great tits is limited by light intensity at the time of the dawn chorus. Captive great tits hunting for prey under different luminance conditions were less successful in finding prey when foraging, hunted for a lower proportion of their time, and handled individual prey items for longer when luminance was under approximately 7 cd/m2. This luminance is not reached in the field until after the time of the dawn chorus, suggesting that in the early morning foraging is limited by light intensity. I suggest that a satisfactory functional explanation of the dawn chorus must take into account the comparatively low foraging opportunity early in the morning, as well as the factors affecting the opportunity for singing and other territorial activities. |
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Powell, R.A. |
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The dog: Its domestication and behavior : By . New York: Garland STPM Press (1978). 296 pp. $24.50 |
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1979 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
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Part 1 |
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318-1211 |
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2146 |
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Duncan, P.; Vigne, N. |
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The effect of group size in horses on the rate of attacks by blood-sucking flies |
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Journal Article |
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1979 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
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Part 2 |
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623-625 |
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refbase @ user @ |
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763 |
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Caraco, T.; Kacelnik, A.; Mesnick, N.; Smulewitz, M. |
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Title |
Short-term rate maximization when rewards and delays covary |
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1992 |
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Animal Behaviour. |
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Anim. Behav. |
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44 |
Issue |
Part 3 |
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441-447 |
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In nature foragers must exploit resources that vary randomly in both the energy acquired per item (reward) and the time required to pursue, capture and process an item (delay). Furthermore, rewards and delays associated with particular resources may often covary significantly. An analytical model asks how variance-covariance levels for rewards and delays could influence choice of resources when lack of information or cognitive limitation implies that a consumer attempts to maximize its short-term rate of energy gain. Both greater expected reward and reduced expected delay clearly should enhance preference for a resource. The model predicts that increased delay variance and reduced reward-delay covariance should increase a forager's preference for a resource. A forager should be risk-averse towards reward variance when the reward-delay covariance is positive, but should become risk-prone towards reward variance when the reward-delay covariance is negative. |
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2113 |
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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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Year |
1989 |
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Animal Behaviour. |
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Anim. Behav. |
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37 |
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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 |
Syme, G.J.; Syme, L.A. |
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Title |
The concept of spatial leadership in farm animals: An experiment with sheep |
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Journal Article |
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Year |
1975 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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23 |
Issue |
Part 4 |
Pages |
921-925 |
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The concept of spatial leadership as applied to farm animals is discussed with particular emphasis on methodological problems. Using three experimental procedures forced spatial leadership orders were measured in a group of Romney ewes. Comparisons between orders showed the effects of both the different experimental tasks and the social context on leadership structure. Both these variables were found to affect the orders obtained. The results are interpreted in terms of the utility of the concept of spatial leadership in domestic animals and the necessity for more systematic procedural investigations in this area. |
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2039 |
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Roberts, J.; Kacelnik, A.; Hunter, M.L. |
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Title |
A model of sound interference in relation to acoustic communication |
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Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
Issue |
Part 4 |
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1271-1273 |
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2124 |
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Author |
Richards, S.M. |
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Title |
The concept of dominance and methods of assessment |
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Journal Article |
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Year |
1974 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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22 |
Issue |
Part 4 |
Pages |
914-930 |
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The arrangement of a social group of individuals into a dominance hierarchy is useful in studies of social behaviour only if a wide variety of social interactions can then be predicted. However, definitions of dominance commonly used are numerous and confused. To assess the usefulness of the concept of dominance, studies were made on six breeding groups of rhesus macaques (Macaca mulata) to determine whether different measures of dominance agreed with each other. The measures tested in this study were found to agree. It is therefore suggested that dominance is a useful intervening variable. Possible reasons for the reported lack of correlation between some measures used by other authors are discussed. |
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2154 |
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