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	Author	Barton, R.A.; Byrne, R.W.; Whiten, A.
	Title	Ecology, feeding competition and social structure in baboons			Type	Journal Article
	Year	1996	Publication	Behavioral Ecology and Sociobiology	Abbreviated Journal	Behav. Ecol. Sociobiol.
	Volume	38	Issue	5	Pages	321-329
	Keywords	Key words Ecology – Competition – Group size – Baboons
	Abstract	Predictions of the model of van Schaik (1989) of female-bonding in primates are tested by systematically comparing the ecology, level of within-group contest competition for food (WGC), and patterns of social behaviour found in two contrasting baboon populations. Significant differences were found in food distribution (percentage of the diet from clumped sources), feeding supplant rates and grooming patterns. In accord with the model, the tendencies of females to affiliate and form coalitions with one another, and to be philopatric, were strongest where ecological conditions promoted WGC. Group fission in the population with strong WGC was “horizontal” with respect to female dominance rank, and associated with female-female aggression during a period of elevated feeding competition. In contrast, where WGC was low, females' grooming was focused on adult males rather than other females. Recent evidence suggests that group fission here is initiated by males, tends to result in the formation of one-male groups, and is not related to feeding competition but to male-male competition for mates. An ecological model of baboon social structure is presented which incorporates the effects of female-female competition, male-male competition, and predation pressure. The model potentially accounts for wide variability in group size, group structure and social relationships within the genus Papio. Socio-ecological convergence between common baboons and hamadryas baboons, however, may be limited in some respects by phylogenetic inertia.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	807
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	Author	Topál, J.; Byrne, R.W.; Miklósi, Á.; Csányi, V.
	Title	Reproducing human actions and action sequences: “Do as I Do!” in a dog			Type	Journal Article
	Year	2006	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	9	Issue	4	Pages	355-367
	Keywords	Animals; Comprehension; Conditioning, Operant; Discrimination Learning; Dogs/psychology; Humans; Imitative Behavior; Male; *Serial Learning
	Abstract	We present evidence that a dog (Philip, a 4-year-old tervueren) was able to use different human actions as samples against which to match his own behaviour. First, Philip was trained to repeat nine human-demonstrated actions on command ('Do it!'). When his performance was markedly over chance in response to demonstration by one person, testing with untrained action sequences and other demonstrators showed some ability to generalise his understanding of copying. In a second study, we presented Philip with a sequence of human actions, again using the 'Do as I do' paradigm. All demonstrated actions had basically the same structure: the owner picked up a bottle from one of six places; transferred it to one of the five other places and then commanded the dog ('Do it!'). We found that Philip duplicated the entire sequence of moving a specific object from one particular place to another more often than expected by chance. Although results point to significant limitations in his imitative abilities, it seems that the dog could have recognized the action sequence, on the basis of observation alone, in terms of the initial state, the means, and the goal. This suggests that dogs might acquire abilities by observation that enhance their success in complex socio-behavioural situations.
	Address	Comparative Ethology Research Group, Hungarian Academy of Sciences, Budapest, Pazmany, P. 1/c H-1117, Hungary. kea@t-online.hu
	Corporate Author				Thesis
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	Language	English	Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
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	Notes	PMID:17024511			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2434
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	Author	Janson, C.; Byrne, R.
	Title	What wild primates know about resources: opening up the black box			Type	Journal Article
	Year	2007	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	10	Issue	3	Pages	357-367
	Keywords	Cognitive map – Primate – Foraging – Ecology – Psychology
	Abstract	Abstract  We present the theoretical and practical difficulties of inferring the cognitive processes involved in spatial movement decisions of primates and other animals based on studies of their foraging behavior in the wild. Because the possible cognitive processes involved in foraging are not known a priori for a given species, some observed spatial movements could be consistent with a large number of processes ranging from simple undirected search processes to strategic goal-oriented travel. Two basic approaches can help to reveal the cognitive processes: (1) experiments designed to test specific mechanisms; (2) comparison of observed movements with predicted ones based on models of hypothesized foraging modes (ideally, quantitative ones). We describe how these two approaches have been applied to evidence for spatial knowledge of resources in primates, and for various hypothesized goals of spatial decisions in primates, reviewing what is now established. We conclude with a synthesis emphasizing what kinds of spatial movement data on unmanipulated primate populations in the wild are most useful in deciphering goal-oriented processes from random processes. Basic to all of these is an estimate of the animals ability to detect resources during search. Given knowledge of the animals detection ability, there are several observable patterns of resource use incompatible with a pure search process. These patterns include increasing movement speed when approaching versus leaving a resource, increasingly directed movement toward more valuable resources, and directed travel to distant resources from many starting locations. Thus, it should be possible to assess and compare spatial cognition across a variety of primate species and thus trace its ecological and evolutionary correlates.
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	Call Number	Admin @ knut @			Serial	4214
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	Author	Bates, L.A.; Sayialel, K.N.; Njiraini, N.W.; Poole, J.H.; Moss, C.J.; Byrne, R.W.
	Title	African elephants have expectations about the locations of out-of-sight family members			Type	Journal Article
	Year	2008	Publication	Biology Letters	Abbreviated Journal	Biol Lett
	Volume	4	Issue	1	Pages	34-36
	Keywords	elephants, olfaction, urine, individual recognition
	Abstract	Monitoring the location of conspecifics may be important to social mammals. Here, we use an expectancy-violation paradigm to test the ability of African elephants (Loxodonta africana) to keep track of their social companions from olfactory cues. We presented elephants with samples of earth mixed with urine from female conspecifics that were either kin or unrelated to them, and either unexpected or highly predictable at that location. From behavioural measurements of the elephants' reactions, we show that African elephants can recognize up to 17 females and possibly up to 30 family members from cues present in the urine-earth mix, and that they keep track of the location of these individuals in relation to themselves.
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	Notes				Approved	yes
	Call Number	Equine Behaviour @ team @			Serial	4332
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	Author	Byrne, R.W.; Bates, L.A.
	Title	Why are animals cognitive?			Type	Journal Article
	Year	2006	Publication	Current Biology : CB	Abbreviated Journal	Curr Biol
	Volume	16	Issue	12	Pages	R445-8
	Keywords	Animals; Arachnida/physiology; Association Learning; Behavior, Animal; *Cognition; Cooperative Behavior; Falconiformes/physiology; Pan troglodytes/physiology; Parrots/physiology; Passeriformes/physiology
	Abstract
	Address	Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, Fife KY16 9JP, Scotland
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	Language	English	Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN	0960-9822	ISBN		Medium
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	Notes	PMID:16781995			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4708
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	Author	Byrne, R.W.
	Title	Animal imitation			Type	Journal Article
	Year	2009	Publication	Current Biology	Abbreviated Journal
	Volume	19	Issue	3	Pages	R111-R114
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	ISSN	0960-9822	ISBN		Medium
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4735
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	Author	Ruiz, A.; Gómez, J.; Roeder, J.; Byrne, R.
	Title	Gaze following and gaze priming in lemurs			Type	Journal Article
	Year	2009	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	12	Issue	3	Pages	427-434
	Keywords
	Abstract	AbstractÂ Â Although primates have often been found to co-orient visually with other individuals, members of these same species have usually failed to use co-orientation to find hidden food in object-choice experiments. This presents an evolutionary puzzle: what is the function of co-orientation if it is not used for a function as basic as locating resources? Co-orientation responses have not been systematically investigated in object-choice experiments, and requiring co-orientation with humans (as is typical in object-choice tasks) may underestimate other speciesâ€™ abilities. Using an object-choice task with conspecific models depicted in photographs, we provide experimental evidence that two lemur species (Eulemur fulvus, nÂ =Â 4, and Eulemur macaco, nÂ =Â 2) co-orient with conspecifics. Secondly, by analysing together two measures that have traditionally been examined separately, we show that lemursâ€™ gaze following behaviour and ultimate choice are closely linked. Individuals were more likely to choose correctly after having looked in the same direction as the model, and thus chose objects correctly more often than chance. We propose a candidate system for the evolutionary origins of more complex gaze following: â€˜gaze priming.â€™
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4951
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	Author	Farmer, K.; Krueger, K.; Byrne, R.
	Title	*Visual laterality in the domestic horse (Equus caballus) interacting with humans*			Type	Journal Article
	Year	2010	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	13	Issue		Pages	229-238
	Keywords	Horse – Laterality – Eye preference – Emotion – Vision
	Abstract	Most horses have a side on which they are easier to handle and a direction they favour when working on a circle, and recent studies have suggested a correlation between emotion and visual laterality when horses observe inanimate objects. As such lateralisation could provide important clues regarding the horseâ€™s cognitive processes, we investigated whether horses also show laterality in association with people. We gave horses the choice of entering a chute to left or right, with and without the passive, non-interactive presence of a person unknown to them. The left eye was preferred for scanning under both conditions, but significantly more so when a person was present. Traditionally, riders handle horses only from the left, so we repeated the experiment with horses specifically trained on both sides. Again, there was a consistent preference for left eye scanning in the presence of a person, whether known to the horses or not. We also examined horses interacting with a person, using both traditionally and bilaterally trained horses. Both groups showed left eye preference for viewing the person, regardless of training and test procedure. For those horses tested under both passive and interactive conditions, the left eye was preferred significantly more during interaction. We suggest that most horses prefer to use their left eye for assessment and evaluation, and that there is an emotional aspect to the choice which may be positive or negative, depending on the circumstances. We believe these results have important practical implications and that emotional laterality should be taken into account in training methods.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4953
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	Author	Bates, L.A.; Lee, P.C.; Njiraini, N.; Poole, J.H.; Sayialel, K.; Sayialel, S.; Moss, C.J.; Byrne, R.
	Title	Do Elephants Show Empathy?			Type	Journal Article
	Year	2008	Publication	Journal of Consciousness Studies	Abbreviated Journal	J Conscious Stud
	Volume	15	Issue	10-11	Pages	204-225
	Keywords
	Abstract	Elephants show a rich social organization and display a number of unusual traits. In this paper, we analyse reports collected over a thirty-five year period, describing behaviour that has the potential to reveal signs of empathic understanding. These include coalition formation, the offering of protection and comfort to others, retrieving and 'babysitting' calves, aiding individuals that would otherwise have difficulty in moving, and removing foreign objects attached to others. These records demonstrate that an elephant is capable of diagnosing animacy and goal directedness, and is able to understand the physical competence, emotional state and intentions of others, when they differ from its own. We argue that an empathic understanding of others is the simplest explanation of these abilities, and discuss reasons why elephants appear to show empathy more than other non-primate species.
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	Notes				Approved	yes
	Call Number	Equine Behaviour @ team @			Serial	5057
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	Author	Genty, E.; Byrne, R.
	Title	Why do gorillas make sequences of gestures?			Type	Journal Article
	Year	2010	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	13	Issue	2	Pages	287-301
	Keywords	Great ape – Gestural communication – Syntax – Semantics – Interaction regulation
	Abstract	Abstract Great ape gestures have attracted considerable research interest in recent years, prompted by their flexible and intentional pattern of use; but almost all studies have focused on single gestures. Here, we report the first quantitative analysis of sequential gesture use in western gorillas (Gorilla gorilla gorilla), using data from three captive groups and one African study site. We found no evidence that gesture sequences were given for reasons of increased communicative efficiency over single gestures. Longer sequences of repeated gestures did not increase the likelihood of response, and using a sequence was seldom in reaction to communicative failure. Sequential combination of two gestures with similar meanings did not generally increase effectiveness, and sometimes reduced it. Gesture sequences were closely associated with play contexts. Markov transition analysis showed two networks of frequently co-occurring gestures, both consisting of gestures used to regulate play. One network comprised only tactile gestures, the other a mix of silent, audible and tactile gestures; apparently, these clusters resulted from gesture use in play with proximal or distal contact, respectively. No evidence was found for syntactic effects of sequential combination: meanings changed little or not at all. Semantically, many gestures overlapped massively with others in their core information (i.e. message), and gesture messages spanned relatively few functions. We suggest that the underlying semantics of gorilla gestures is highly simplified compared to that of human words. Gesture sequences allow continual adjustment of the tempo and nature of social interactions, rather than generally conveying semantically referential information or syntactic structures.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5114
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