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	Author	Schuck-Paim, C.; Kacelnik, A.
	Title	Rationality in risk-sensitive foraging choices by starlings			Type	Journal Article
	Year	2002	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	64	Issue	6	Pages	869-879
	Keywords
	Abstract	Normative models of choice usually predict preferences between alternatives by computing their value according to some criterion, then identifying the alternative with greatest value. An important consequence of this procedure is captured in the economic concept of rationality, defined through a number of principles that are necessary for the existence of an ordinal scale of value upon which organisms base their choices. Violations of these principles, such as some recently reported breaches of transitivity and regularity in birds and honeybees, have strong implications for the understanding of decision mechanisms in humans and nonhumans alike. We investigated rationality in risky choice using European starlings, Sturnus vulgaris. Birds had to choose between two or three food sources, each associated with a different variance in delay to reward. In three experiments, starlings were strongly risk prone, showing regular and consistent preferences in binary and trinary choices. Preferences also satisfied weak and strong stochastic transitivity. Our results extend the generality of previous research in risk-sensitive foraging to situations where more than two alternatives are present and suggest that violations of rationality in risk-sensitive choices may be expressed only under restricted sets of conditions. Copyright 2002 The Association for the Study of Animal Behaviour. Published by Elsevier Science Ltd. All rights reserved.
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	Notes				Approved	no
	Call Number				Serial	2106
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	Author	Kacelnik, A.; Marsh, B.
	Title	Cost can increase preference in starlings			Type	Journal Article
	Year	2002	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	63	Issue	2	Pages	245-250
	Keywords
	Abstract	We used European starlings, Sturnus vulgaris, to investigate the relationship between the cost paid to obtain food rewards and preference between stimuli associated with the resulting rewards. In no-choice trials either 16 1-m flights (high effort) or four 1-m flights (low effort) gave access to differently coloured keys. Pecking at these keys resulted in identical food rewards. When subjects were given choices between the coloured keys in choice trials without having paid any effort, the majority preferred the coloured key that was paired with the higher level of work in no-choice trials. We relate our findings to results in animal behaviour, psychology and economics, and give a theoretical account that has implications for phenomena variously recognized as the `sunk cost fallacy' (the tendency to invest more in something after much has already been invested), `work ethics' (valuing an option more as a result of physical effort), `cognitive dissonance' (making mental effort to overlook or re-evaluate information that does not accord with a dominant internal representation) and the `Concorde Fallacy' (the readiness to forego more fitness for something that has been responsible for greater fitness compromise in the past).
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	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
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	Notes				Approved	no
	Call Number				Serial	2107
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	Author	Dugatkin, L.A.
	Title	Cooperation in animals: An evolutionary overview			Type	Journal Article
	Year	2002	Publication	Biology and Philosophy	Abbreviated Journal
	Volume	17	Issue	4	Pages	459-476
	Keywords
	Abstract	Evolutionary biologists have grappled with the question of the emergenceand maintenance of cooperation since Darwin first listed animal cooperation asapotential problem for his theory of natural selection. Here I review four pathsthat have been delineated in the study of intra-specific cooperation amonganimals. These paths – kinship, reciprocity, byproduct mutualism andgroupselection – serve as a starting point for behavioral ecologistsinterestedstudying the initiation and maintenance of cooperation. After reviewing theempirical and theoretical underpinnings of these paths to cooperation, I touchupon some recent work that has attempted to examine (or reexamine) the role ofphylogeny, punishment and morality in the light of cooperative behavior.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2179
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	Author	Christensen, J.W.; Ladewig, J.; Sondergaard, E.; Malmkvist, J.
	Title	Effects of individual versus group stabling on social behaviour in domestic stallions			Type	Journal Article
	Year	2002	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	75	Issue	3	Pages	233-248
	Keywords	Horse; Individual stabling; Group stabling; Social behaviour
	Abstract	Domestic horses (Equus caballus) are typically kept in individual housing systems, in which they are deprived of physical contact. In order to study the effects of social restrictions on behaviour in young horses, nineteen 2-year-old stallions were housed either singly (n=7), or in groups of three (n=12) for 9 months. Subsequently, the stallions were released into two separate 2 ha enclosures according to treatment, and recordings were made on social interactions and nearest neighbours during a 6-week-period, 28 h per week. Previously group stabled stallions frequently had a former group mate as their nearest neighbour (P=0.001), whereas previously singly stabled stallions did not associate more with their former box neighbours, to whom physical contact was limited by bars during the previous treatment. The nearest neighbour was more frequently recorded to be within one horselength of singly stabled than of group stabled stallions (P=0.005). More aggressive behaviour was recorded in the group of previously singly stabled stallions, i.e. bite threats (P=0.032), whereas group stabled stallions tended to make more use of subtle agonistic interactions (displacements, submissive behaviour). Singly stabled stallions also responded to the 9 months of social deprivation by significantly increasing the level of social grooming (P<0.001) and play behaviour (P<0.001), when subsequently interacting freely with other horses. The increased occurrence may relate to a build-up of motivation (a rebound effect), as well as to external factors, such as playful pasture companions and the increased space allowance of the pasture. It is concluded that 2-year-old domestic stallions are sensitive to social deprivation and that stabling has long-term effects, lasting 6 weeks at least, on the social behaviour in stallions.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2257
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	Author	King, S.R.B.; Gurnell, J.
	Title	*Behavioural ecology of Przewalski horses (Equus przewalskii) reintroduced to Hustai National Park, Mongolia*			Type	Manuscript
	Year	2002	Publication	Queen Mary, University of London	Abbreviated Journal
	Volume		Issue		Pages
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	Corporate Author				Thesis	Ph.D. thesis
	Publisher		Place of Publication		Editor
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2320
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	Author	Moehlman, P. D. (ed)
	Title	Equids: zebras, asses and horses: status survey and conservation action plan			Type	Book Whole
	Year	2002	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract	Once one of the most abundant grazing animals, now only seven species remain. Equids persist in some of the harshest climates and terrains in the world, habitats which are also home to many human populations. Conservation will depend on local nomadic pastoralists participating in, and benefiting from, the conservation management of their areas. Included are summaries of the conservation status, biology and ecology of wild zebras, asses, and horses and recommendations for conservation action Quantity: or Sign in to turn on 1-Click ordering. More Buying Choices 3 used & new from $31.46 Get it for less! Order it used Have one to sell? Sell yours here Tell a Friend Equids: Zebras, Asses And Horses: Status Survey And Conservation Action Plan Publisher: learn how customers can search inside this book. Equids: Zebras, Asses And Horses: Status Survey And Conservation Action Plan (Paperback) by Patricia D Moehlman (Editor) No customer reviews yet.Be the first. List Price: $32.00 Price: $32.00 & this item ships for FREE with Super Saver Shipping. Details Availability: In Stock. Ships from and sold by Amazon.com. Gift-wrap available. Only 1 left in stock--order soon (more on the way). Want it delivered Friday, June 29? Order it in the next 8 hours and 13 minutes, and choose One-Day Shipping at checkout. See details 3 used & new available from $31.46 Keep connected to what's happening in the world of books by signing up for Amazon.com Books Delivers, our monthly subscription e-mail newsletters. Discover new releases in your favorite categories, popular pre-orders and bestsellers, exclusive author interviews and podcasts, special sales, and more. Editorial Reviews Book Description The new Equid Action Plan provides current knowledge on the biology, ecology and conservation status of wild zebras, asses, and horses. It specifies what information is lacking, and prioritizes needed conservation actions. The Action Plan also provides chapters on equid taxonomy, genetics, reproductive biology, and population dynamics. These chapters highlight unsolved issues of taxonomy and genetics. They also provide information and insight into the special demographic and genetic challenges of managing small populations. The chapter on disease provides a review of documented equine disease and epidemiology and focuses on priorities for equid conservation health. The final chapter deals with the importance of developing an assessment methodology that explicitly considers the role of equids in ecosystems and the ecological processes that are necessary for ecosystem viability. The approach of combining ecological field studies and ecosystem modeling should prove useful for the scientific management and conservation of wild equids worldwide. These chapters provide research and conservation practitioners with new information and paradigms.
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	Publisher	IUCN	Place of Publication	Gland, Switzerland	Editor	Moehlman, P. D.
	Language		Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN		ISBN	978-2831706474	Medium
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2384
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	Author	Miklósi, Á.
	Title	Cecilia Heyes and Ludwig Huber (eds): The Evolution of Cognition			Type	Journal Article
	Year	2002	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	5	Issue	3	Pages	187-189
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3096
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	Author	Miklósi, Á.
	Title	On the usefulness and limits of functional analogies			Type	Journal Article
	Year	2002	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	5	Issue	1	Pages	17-18
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3227
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	Author	Simpson, B.S.
	Title	Neonatal foal handling			Type	Journal Article
	Year	2002	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	78	Issue	2-4	Pages	303-317
	Keywords	Neonatal foal handling; Imprint training; Learning in foals; Heart rate; Serum cortisol concentrations
	Abstract	Recent interest has focused on the advantage of intensively handling young foals as a means of producing more tractable horses, accustomed to humans and receptive to training. To date, the effect of this intensive handling, dubbed “imprint training” in the popular literature, has not been tested. The present study compares seven foals handled intensively as neonates with eight untreated controls. The handling protocol started from 2-8 h after birth and continued daily for a total of 5 days. The protocol consisted of a series of stimuli and experiences that were each repeated until the foal no longer resisted or reacted negatively. Subsequently, foals were tested before weaning, at 4 months of age. Results indicated that handled foals (HF) ranked higher than control foals (CF) in subjective ratings of calmness (P<0.0117) and friendliness (P<0.0001) and in several specific handling tasks (venipuncture P<0.0220; placing in stock P<0.0128). Although, in approach tests all foals but one allowed approach of a person to 4 m, significantly more HF approached the person than CF (P<0.0080). In stimulus tests, foals were presented specific stimuli to which they had been tested as neonates. Two of eight CF were too unruly and dangerous to test. Of foals that could be tested, CF required significantly more time to hook-up a heart rate monitor (*P<0.0055). Split-plot analysis indicated that HF had lower heart rates to initial left-sided stimuli, presented first, than CF (P<0.0421). In response to right-sided stimuli, heart rate scores of CF were not significantly different from HF (P<0.2259), suggesting reduced reactivity over time due to a learning effect. Behavioral responses to specific stimuli did not differ between CF and HF, suggesting that neonatal handling has a general rather than specific effect on subsequent behavior. Cortisol concentrations were measured before and after testing and the difference calculated. All foals had higher post-testing levels than pre-testing levels. There was a significant difference between HF and CF, indicating greater reactivity among the CF (*P<0.050). In general, the results indicated that foals handled as neonates were more tractable and less reactive. Specific neonatal handling tasks, such as sticking a finger up the foal's nose or patting the bottom of the foot, seemed to have no beneficial effect on related tasks such as passing a nasogastric tube or tapping with a farrier's hammer at 4 months of age. Mechanisms for the observed effect of neonatal handling require further investigation.
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	Series Editor		Series Title		Abbreviated Series Title
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3623
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	Author	Houpt, K.A.
	Title	Formation and dissolution of the mare-foal bond			Type	Journal Article
	Year	2002	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	78	Issue	2-4	Pages	319-328
	Keywords	Maternal; Horse; Foal; Separation; Ontogeny
	Abstract	The behavior of mares at foaling and their behavior during subsequent weekly brief separations from their foals was quantified. Thirteen multiparous pony mares were observed for the first 30 min after foaling. Activities directed toward the foal and toward the fetal membranes were recorded. There were 16+/-8 contacts with the fetal membranes, most in the first 10 min post-partum. There were 81+/-12 activities directed toward the foal. There was a downward trend in foal contacts over the first 30 min. Eight of the 13 mares were observed for the 30-60 min post-partum during which licking and touching the foal continued. Only one of the foals suckled in the first 30 min, but half had suckled by 60 min. Ten mares and foals were separated for 5 min each week for 9 weeks. Although mare responses (neighs and steps) decreased with age of the foal, the foals' responses increased from weeks 1 to 2 and then decreased with foal age. This indicates that foal attachment to the mare is not complete until it is 2 weeks old.
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	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
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	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3624
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