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	Author	de Waal, F.B.
	Title	Food transfers through mesh in brown capuchins			Type	Journal Article
	Year	1997	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	111	Issue	4	Pages	370-378
	Keywords	Animals; Cebus/psychology; Feeding Behavior; Female; Food Preferences/psychology; Male; Motivation; Sex Factors; Social Behavior; Social Environment
	Abstract	Capuchin monkeys (Cebus apella) share food even if their partner is behind a mesh restraint. Pairs of adult capuchins were moved into a test chamber in which 1 monkey received cucumber pieces for 20 min and the other received apple slices during the following 20 min. Tolerant transfers of food occurred reciprocally among females: The rate of transfer from Female B to A in the second test phase varied with the rate from Female A to B in the first test phase. Several social mechanisms may explain this reciprocity. Whereas this study does not contradict cognitively complex explanations (e.g., mental record keeping of given and received food), the results are consistent with a rather simple explanation: that food sharing reflects a combination of affiliative tendency and high tolerance. The study suggests that sharing mechanisms may be different for adult male capuchins, with males sharing food more readily and less discriminatingly than females.
	Address	Yerkes Primate Center, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9419882			Approved	no
	Call Number	refbase @ user @			Serial	198
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	Author	de Waal, F.B.; Berger, M.L.
	Title	Payment for labour in monkeys			Type	Journal Article
	Year	2000	Publication	Nature	Abbreviated Journal	Nature
	Volume	404	Issue	6778	Pages	563
	Keywords	Animals; Cebus/physiology; Cooperative Behavior; Evolution; *Feeding Behavior; Female; Male; Reward
	Abstract
	Address	Living Links, Yerkes Regional Primate Research Center, and Department of Psychology, Emory University, Atlanta, Georgia 30329, USA. dewaal@emory.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0028-0836	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10766228			Approved	no
	Call Number	refbase @ user @			Serial	190
Permanent link to this record



	Author	Devenport, J.A.; Patterson, M.R.; Devenport, L.D.
	Title	*Dynamic averaging and foraging decisions in horses (Equus callabus)*			Type	Journal Article
	Year	2005	Publication	Journal of Comparative psychology	Abbreviated Journal	J. Comp. Psychol.
	Volume	119	Issue	3	Pages	352-358
	Keywords	Animals; Decision Making; Feeding Behavior; Female; Horses/psychology; Male; Memory, Short-Term; Motivation; Orientation; *Social Environment
	Abstract	The variability of most environments taxes foraging decisions by increasing the uncertainty of the information available. One solution to the problem is to use dynamic averaging, as do some granivores and carnivores. Arguably, the same strategy could be useful for grazing herbivores, even though their food renews and is more homogeneously distributed. Horses (Equus callabus) were given choices between variable patches after short or long delays. When patch information was current, horses returned to the patch that was recently best, whereas those without current information matched choices to the long-term average values of the patches. These results demonstrate that a grazing species uses dynamic averaging and indicate that, like granivores and carnivores, they can use temporal weighting to optimize foraging decisions.
	Address	Department of Psychology, University of Central Oklahoma, 73034, USA. jdevenport@ucok.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16131264			Approved	no
	Call Number	refbase @ user @			Serial	752
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	Author	Dixon, G.; Green, L.E.; Nicol, C.J.
	Title	Effect of diet change on the behavior of chicks of an egg-laying strain			Type	Journal Article
	Year	2006	Publication	Journal of applied animal welfare science : JAAWS	Abbreviated Journal	J Appl Anim Welf Sci
	Volume	9	Issue	1	Pages	41-58
	Keywords	Animal Feed; Animal Nutrition Physiology; Animals; Behavior, Animal/physiology; Chickens/physiology; Crowding; Feeding Behavior/*physiology; Female; Food Preferences/physiology; Oviposition; Random Allocation; Taste
	Abstract	Injurious pecking has serious welfare consequences in flocks of hens kept for egg laying, especially when loose-housed. Frequent diet change is a significant risk for injurious pecking; how the mechanics of diet change influence pecking behavior is unknown. This study investigated the effect of diet change on the behavior of chicks from a laying strain. The study included a 3-week familiarity phase: 18 chick pairs received unflavored feed (Experiment 1); 18 pairs received orange oil-flavored (Experiment 2). All chicks participated in a dietary preference test (P); a diet change (DC); or a control group (C), 6 scenarios. All P chicks preferred unflavored feed. In Experiment 1, DC involved change from unflavored to orange-flavored; Experiment 2, orange- flavored to unflavored. Compared with controls, Experiment 2 DC chicks exhibited few behavioral differences; Experiment 1 DC chicks exhibited increased behavioral event rates on Days 1 and 7. They pecked significantly longer at their environment; by Day 7, they showed significantly more beak activity. There was little evidence of dietary neophobia. Change from more preferred to less preferred feed led to increased activity and redirected pecking behavior.
	Address	School of Veterinary Science, University of Bristol, England
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1088-8705	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16649950			Approved	no
	Call Number	refbase @ user @			Serial	64
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	Author	Drapier, M.; Chauvin, C.; Thierry, B.
	Title	Tonkean macaques ( Macaca tonkeana) find food sources from cues conveyed by group-mates			Type	Journal Article
	Year	2002	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	5	Issue	3	Pages	159-165
	Keywords	Animal Communication; Animals; Cognition; Feeding Behavior; Food; Macaca; Male; Smell; *Social Behavior; Visual Perception
	Abstract	It is possible that non-specialised cues transmitted by conspecifics guide animals' food search provided they have the cognitive abilities needed to read these cues. Macaques often check the mouth of their group-mates by olfactory and/or visual inspection. We investigated whether Tonkean macaques ( Macaca tonkeana) can find the location of distant food on the basis of cues conveyed by group-mates. The subjects of the study were two 6-year-old males, who belonged to a social group of Tonkean macaques raised in semi-free-ranging conditions. In a first experiment, we tested whether the subject can choose between two sites after having sniffed a partner who has just eaten food corresponding to one of the sites. We found that both subjects were able to choose the matching site significantly above the chance level. This demonstrated that Tonkean macaques are capable of delayed olfactory matching. They could associate a food location with an odour conveyed by a partner. In a second experiment, the same subjects were allowed to see their partner through a Plexiglas window. Both subjects were still able to choose the matching site, demonstrating they could rely on visual cues alone. Passive recruitment of partners appears possible in macaques. They can improve their foraging performances by finding the location of environmental resources from olfactory or visual cues conveyed by group-mates.
	Address	Equipe d'Ethologie et Ecologie Comportementale des Primates, Centre d'Ecologie et Physiologie Energetiques, CNRS UPR 9010, 7 rue de l'Universite, 67000 Strasbourg, France
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:12357288			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2597
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	Author	Dubois, F.; Giraldeau, L.-A.
	Title	The forager's dilemma: food sharing and food defense as risk-sensitive foraging options			Type	Journal Article
	Year	2003	Publication	The American Naturalist	Abbreviated Journal	Am Nat
	Volume	162	Issue	6	Pages	768-779
	Keywords	Animals; Competitive Behavior/physiology; Environment; Feeding Behavior/physiology; Game Theory; *Models, Biological; Population Density; Population Dynamics
	Abstract	Although many variants of the hawk-dove game predict the frequency at which group foraging animals should compete aggressively, none of them can explain why a large number of group foraging animals share food clumps without any overt aggression. One reason for this shortcoming is that hawk-dove games typically consider only a single contest, while most group foraging situations involve opponents that interact repeatedly over discovered food clumps. The present iterated hawk-dove game predicts that in situations that are analogous to a prisoner's dilemma, animals should share the resources without aggression, provided that the number of simultaneously available food clumps is sufficiently large and the number of competitors is relatively small. However, given that the expected gain of an aggressive animal is more variable than the gain expected by nonaggressive individuals, the predicted effect of the number of food items in a clump-clump richness-depends on whether only the mean or both the mean and variability associated with payoffs are considered. More precisely, the deterministic game predicts that aggression should increase with clump richness, whereas the stochastic risk-sensitive game predicts that the frequency of encounters resulting in aggression should peak at intermediate clump richnesses or decrease with increasing clump richness if animals show sensitivity to the variance or coefficient of variation, respectively.
	Address	Departement des Sciences Biologiques, Universite du Quebec a Montreal, Case postale 8888, Succursale Centre-Ville, Montreal, Quebec H3C 3P8, Canada. fdubois@u-bourgogne.fr
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0003-0147	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:14737714			Approved	no
	Call Number				Serial	2132
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	Author	Edman, J.D.
	Title	Host-feeding patterns of Florida mosquitoes. I. Aedes, Anopheles, Coquillettidia, Mansonia and Psorophora			Type	Journal Article
	Year	1971	Publication	Journal of Medical Entomology	Abbreviated Journal	J Med Entomol
	Volume	8	Issue	6	Pages	687-695
	Keywords	Aedes; Animals; Anopheles; Birds; Cats; Cattle; Culicidae; Dogs; Ecology; Feeding Behavior; Female; Florida; Horses; Humans; Swine
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0022-2585	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:4403447			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2722
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	Author	Emery, N.J.; Dally, J.M.; Clayton, N.S.
	Title	Western scrub-jays ( Aphelocoma californica) use cognitive strategies to protect their caches from thieving conspecifics			Type	Journal Article
	Year	2004	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	7	Issue	1	Pages	37-43
	Keywords	Animals; Birds/physiology; Feeding Behavior/physiology; Female; Food; Male; Memory
	Abstract	Food caching birds hide food and recover the caches when supplies are less abundant. There is, however, a risk to this strategy because the caches are susceptible to pilfering by others. Corvids use a number of different strategies to reduce possible cache theft. Scrub-jays with previous experience of pilfering other's caches cached worms in two visuospatially distinct caching trays either in private or in the presence of a conspecific. When these storers had cached in private, they subsequently observed both trays out of reach of a conspecific. When these storers had cached in the presence of a conspecific, they subsequently watched the observer pilfering from one of the trays while the other tray was placed in full view, but out of reach. The storers were then allowed to recover the remaining caches 3 h later. Jays cached more worms when they were observed during caching. At the time of recovery, they re-cached more than if they had cached in private, selectively re-caching outside of the trays in sites unbeknown to potential thieves. In addition, after a single pilfering trial, the jays switched their recovery strategy from predominantly checking their caches (i.e. returning to a cache site to see whether the food remained there) to predominantly eating them. Re-caching remained constant across the three trials. These results suggest that scrub-jays use flexible, cognitive caching and recovery strategies to aid in reducing potential future pilfering of caches by conspecifics.
	Address	Sub-department of Animal Behaviour, University of Cambridge, High Street, CB3 8AA Madingley, Cambs, UK. nje23@cam.ac.uk
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:12827547			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2566
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	Author	Fragaszy, D.; Visalberghi, E.
	Title	Socially biased learning in monkeys			Type	Journal Article
	Year	2004	Publication	Learning & behavior : a Psychonomic Society publication	Abbreviated Journal	Learn Behav
	Volume	32	Issue	1	Pages	24-35
	Keywords	Adaptation, Psychological; Animal Communication; Animals; Behavior, Animal; Feeding Behavior/psychology; Food Preferences/psychology; Haplorhini/psychology; Imitative Behavior; Imprinting (Psychology); Learning; Social Environment; Social Facilitation
	Abstract	We review socially biased learning about food and problem solving in monkeys, relying especially on studies with tufted capuchin monkeys (Cebus apella) and callitrichid monkeys. Capuchin monkeys most effectively learn to solve a new problem when they can act jointly with an experienced partner in a socially tolerant setting and when the problem can be solved by direct action on an object or substrate, but they do not learn by imitation. Capuchin monkeys are motivated to eat foods, whether familiar or novel, when they are with others that are eating, regardless of what the others are eating. Thus, social bias in learning about foods is indirect and mediated by facilitation of feeding. In most respects, social biases in learning are similar in capuchins and callitrichids, except that callitrichids provide more specific behavioral cues to others about the availability and palatability of foods. Callitrichids generally are more tolerant toward group members and coordinate their activity in space and time more closely than capuchins do. These characteristics support stronger social biases in learning in callitrichids than in capuchins in some situations. On the other hand, callitrichids' more limited range of manipulative behaviors, greater neophobia, and greater sensitivity to the risk of predation restricts what these monkeys learn in comparison with capuchins. We suggest that socially biased learning is always the collective outcome of interacting physical, social, and individual factors, and that differences across populations and species in social bias in learning reflect variations in all these dimensions. Progress in understanding socially biased learning in nonhuman species will be aided by the development of appropriately detailed models of the richly interconnected processes affecting learning.
	Address	Psychology Department, University of Georgia, Athens, Georgia 30602, USA. doree@uga.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1543-4494	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15161138			Approved	no
	Call Number	refbase @ user @			Serial	828
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	Author	Friedrich, A.M.; Zentall, T.R.
	Title	Pigeons shift their preference toward locations of food that take more effort to obtain			Type	Journal Article
	Year	2004	Publication	Behavioural processes	Abbreviated Journal	Behav. Process.
	Volume	67	Issue	3	Pages	405-415
	Keywords	Animals; Behavior, Animal; Choice Behavior; Columbidae; Exertion; Feeding Behavior; Reward
	Abstract	Although animals typically prefer to exert less effort rather than more effort to obtain food, the present research shows that requiring greater effort to obtain food at a particular location appears to increase the value of that location. In Experiment 1, pigeons' initial preference for one feeder was significantly reduced by requiring 1 peck to obtain food from that feeder and requiring 30 pecks to obtain food from the other feeder. In Experiment 2, a similar decrease in preference was not found when pigeons received reinforcement from both feeders independently of the amount of effort required. These results are consistent with the within-trial contrast effect proposed by in which the relative hedonic value of a reward depends on the state of the animal immediately prior to the reward. The greater the improvement from that prior state the greater the value of the reinforcer.
	Address	Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0376-6357	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15518990			Approved	no
	Call Number	refbase @ user @			Serial	227
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