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	Author	McDonnell, S.M.; Haviland, J.C.S.
	Title	Agonistic ethogram of the equid bachelor band			Type	Journal Article
	Year	1995	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	43	Issue	3	Pages	147-188
	Keywords	Equid; Horse; Bachelor; Agonistic; Social behavior; Ethogram
	Abstract	An ethogram of agonistic and related behaviors among equid bachelor band members was developed. Several key English-language studies on equids were reviewed to derive a preliminary inventory of specific behaviors to be included in the ethogram. A bachelor band of domestic pony stallions pastured together was observed for approximately 50 daylight hours to obtain detailed descriptions of each behavior, enable photographic and video documentation of behaviors, and identify any behaviors to be added to the preliminary inventory. An initial draft of the ethogram was sent to 65 equine researchers for review. Twenty-eight critical reviews were received and their suggestions considered for the final draft. A total of 49 elemental behaviors including five distinct vocalizations was included in the ethogram. Three complex behavioral sequences were also included. Most of the behaviors catalogued from the direct observation of pastured pony stallions were also found in the equid literature. For many, references to these behaviors specifically among males or bachelor band members were not found. The results offer a practical tool for quantitative research and other studies of equid inter-male behavior as well as for teaching of equid behavior, and should facilitate progress toward development of a complete ethogram for the horse and other equids.
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	Notes				Approved	no
	Call Number	refbase @ user @ ; Equine Behaviour @ team @ room B 3.029			Serial	749
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	Author	Duncan, I.J.H.
	Title	D.G.M. Wood-Gush Memorial Lecture: An applied ethologist looks at the question “Why?”			Type	Journal Article
	Year	1995	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	44	Issue	2-4	Pages	205-217
	Keywords	Causation; Cognition; Function; Future research; Ontogeny; Phylogeny; States of suffering; Welfare
	Abstract	The question “Why does an animal behave as it does?” can be answered in terms of ontogeny, function, phylogeny and causation. The achievements of applied ethology relative to those four approaches are reviewed, gaps in our knowledge are identified and predictions for fruitful avenues of future research are made. Ontogenic studies have been useful in the past and it is suggested that studies of the effects of early experience on the sexual behaviour of animals used in artificial breeding schemes might pay dividends. It is proposed that functional studies should be approached cautiously. More information is required on the process of domestication in order to increase the chances of success in the trend to farm exotic species. Studies on causation are likely to continue to be the mainstay of applied ethological research. It is suggested that within this category, studies on states of suffering, motivation and cognition are urgently required to answer the most pressing questions on animal welfare.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2919
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	Author	i Rios, J.F.; Houpt, K.
	Title	Sexual behavior in geldings			Type	Journal Article
	Year	1995	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	46	Issue	1-2	Pages	133-135
	Keywords
	Abstract	Abstract In response to a request published in Equus, a magazine for those interested in horses, 85 owners of older geldings exhibiting sexual behavior completed history forms. The mean age of geldings was 16 f 5 years. Only 39 of the owners had had the gelding for at least a year before the behavior was noted. These cases could be used to determine the true age of onset of the problem. When log survivorship was used to determine whether there were one or two different populations, a break or change in the slope at age 16 indicated that there are two populations. One population shows the behavior from the time of castration and the other first exhibits the behavior in old age, possibly in response to an ACTH secreting pituitary adenoma. A total of 40% of the horses were Quarterhorses, the most numerous breed in the US; 78% of the horses were purebreds. Fewer than half the owners knew the age at which their horse had been castrated because they did not own the horse at the time. The mean age at castration, when known, was 3.3 f 2.5 years. The reason for contacting us was sexual behavior (70%), aggression (24%). or some other problem ( 1 o/o). Whether or not aggression was the presenting problem, most of the horses showed aggression (95%), particularly towards other geldings (88%)) but also towards people (3 1%). Copulatory behavior (mounting) was shown by 69% of the geldings and half of those were able to intromit. These findings indicate that the sexual behavior of geldings is a problem for owners and that aggression usually accompanies sexual behavior. The owners were encouraged to send serum samples taken before and after human chorionic gonadotropin (HCG) administration for testosterone and estrone sulfate analysis to determine whether residual testicular tissue was responsible for the horse’s behavior. Of the 14 horses tested, only one had elevated levels of testosterone indicating that there was residual testicular tissue. A total of six of the owners agreed to treat their horses with cyproheptadine at a dose of 8 mg day- ’ gradually increased to 88 mg day- ’ per horse. A total of three of the horses showed a decline in sexual and aggressive behavior, one got worse and two had side effects and treatment was withdrawn.
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	Notes				Approved	yes
	Call Number	Equine Behaviour @ team @			Serial	3627
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	Author	Custance DM; Whiten A; Bard KA
	Title	Can young chimpanzees imitate arbitrary actions? Hayes and Hayes (1952) revisited			Type	Journal Article
	Year	1995	Publication	Behavior	Abbreviated Journal
	Volume	132	Issue		Pages	839
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2990
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	Author	Mesterton-Gibbons, M.; Dugatkin, L.A.
	Title	Toward a theory of dominance hierarchies: effects of assessment, group size, and variation in fighting ability			Type	Journal Article
	Year	1995	Publication	Behavioral Ecology	Abbreviated Journal	Behav. Ecol.
	Volume	6	Issue	4	Pages	416-423
	Keywords
	Abstract	We introduce assessment to the analysis of dominance hierarchies by exploring the effect of an evolutionarily stable fighting rule when there is variation in resource holding potential (RHP) and RHP is not a perfectly reliable predictor of the outcome of a fight. With assessment, the probability of a linear hierarchy decreases with group size but can remain appreciable for groups of up to seven or eight individuals, whereas it decreases virtually to zero if there is no assessment. The probability of a hierarchy that correlates perfectly with RHP is low unless group size is small.
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	Notes	10.1093/beheco/6.4.416			Approved	no
	Call Number	refbase @ user @			Serial	447
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	Author	Chalmeau, R.; Gallo, A.
	Title	Cooperation in primates: Critical analysis of behavioural criteria			Type	Journal Article
	Year	1995	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	35	Issue	1-3	Pages	101-111
	Keywords	Cognition; Communication; Cooperation; Evolution; Primates
	Abstract	Concerning hunting in chimpanzees, cooperation has generally been attributed to the behaviour of two or more individuals acting together to achieve a common goal (Boesch and Boesch, 1989). The common goal is often considered as the concrete result of a common action by two or several individuals. Although this result could be used as a criterion for cooperation, it could also be an outcome due to chance. We suggest that the goal, viewed as a concrete benefit shared by the partners, is not a requisite of cooperation but rather a possible consequence of a common action largely submitted to social constraints. Individuals engaged in a cooperative task in order to solve a problem have to exchange information to adjust to each other's behaviour. However, evidence of communication between partners during simultaneous cooperation is rare. An experiment in which two chimpanzees each had to simultaneously pull a handle to get a fruit was performed. We analysed not only the concrete result of the partners' activity but also what the individuals took into account before pulling a handle. We tried to specify what the chimpanzees learned by means of a series of logical propositions which we were able to confront the experimental results.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	570
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	Author	Lefebvre, L.
	Title	Ecological correlates of social learning: problems and solutions for the comparative method			Type	Journal Article
	Year	1995	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	35	Issue	1-3	Pages	163-171
	Keywords	Adaptive specialization; Social learning; Comparative method
	Abstract	Interspecific variation in learning and cognition is often accounted for by adaptive specialization, an ecological framework where variation between species in the environmental problems they face is thought to select for quantitatively and/or qualitatively different abilities. Adaptive specialization theory relies on the comparative method for testing its hypotheses and assumes a naturally selected basis for the predicted differences. This review examines social learning as a specialization to group-living and scramble feeding competition. It points out one important problem with current studies in the area, the lack of quantitative controls for confounding variables that may cause type 1 or 2 error in comparative tests. A linear regression technique is proposed to measure and remove interspecific differences on control tests for which there is no predicted adaptive specialization; as in other areas of comparative biology, the adaptive prediction is then made on the residual deviation from the regression of these confounding variables. Examples are given from research on opportunistic Columbids, the group-living feral pigeon Columbia livia, and the territorial Zenaida dove, Zenaida aurita.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	843
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	Author	Gärdenfors P.
	Title	Cued and detached representations in animal cognition			Type	Journal Article
	Year	1995	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	35	Issue		Pages	263-273
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	3454
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	Author	Beer C.G.
	Title	Trial and error in the evolution of cognition			Type	Journal Article
	Year	1995	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	35	Issue		Pages	215-224
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	3455
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	Author	Robinson, T.A.; Foster, T.M.; Temple, W.; Poling, A.
	Title	Performance of domestic hens under progressive-ratio schedules of food delivery			Type	Journal Article
	Year	1995	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	34	Issue	3	Pages	233-239
	Keywords	Progressive-ratio schedule; Domestic hen; Behavioral economics; Satiation
	Abstract	Domestic hens were exposed to progressive-ratio 2 and progressive-ratio 10 schedules of food delivery with different initial ratios (2, 10, 20, 30, and 40). Breaking points, defined as the largest ratios completed before responding ceased for 600 consecutive seconds, were recorded under all conditions. In general, breaking points were higher under the PR 10 schedule than under the PR 2 schedule, and the value of the initial ratio did not systematically affect the breaking point. The former finding suggests that relative satiation affected breaking points in the present study, but the latter finding suggests that the primary determinant was the `price' of the reinforcer, defined in terms of the number of responses required to produce it. Breaking points were similar under conditions where initial ratios changed from session to session and under more conventional conditions, where initial ratios remained unchanged over several sessions.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3605
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