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Author Roberts, J.; Kacelnik, A.; Hunter, M.L.
Title A model of sound interference in relation to acoustic communication Type Journal Article
Year 1979 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume (up) 27 Issue Part 4 Pages 1271-1273
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Notes Approved no
Call Number Serial 2124
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Author Kacelnik, A.
Title The foraging efficiency of great tits (Parus major L.) in relation to light intensity Type Journal Article
Year 1979 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume (up) 27 Issue Part 1 Pages 237-241
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Abstract 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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Notes Approved no
Call Number Serial 2125
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Author Powell, R.A.
Title The dog: Its domestication and behavior : By . New York: Garland STPM Press (1978). 296 pp. $24.50 Type Journal Article
Year 1979 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume (up) 27 Issue Part 1 Pages 318-1211
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Notes Approved no
Call Number Serial 2146
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Author Petherick, J.C.; Rutter, S.M.
Title Quantifying motivation using a computer-controlled push-door Type Journal Article
Year 1990 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume (up) 27 Issue 1 Pages 159-167
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Abstract A computer-controlled push-door system was designed and tested as a method for measuring motivation. Eleven domestic hens were trained to use the push-door to gain access to food. They were deprived of food for 12 h or 43 h on 12 occasions and the push-door was used to measure the amount of “work” (measured as force × time) that they performed to gain access to a food reward. When deprived of food for 12 h the hens took significantly longer (P<0.01) to reach the required threshold of work, than when deprived for 43 h. This difference arose from the amount of time that the hens spent not pushing at the door. The problems encountered with this system and such an approach to measuring motivation are discussed.
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ISSN 0168-1591 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6165
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Author Chalmeau, R.; Gallo, A.
Title Social constraints determine what is learned in the chimpanzee Type Journal Article
Year 1993 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume (up) 28 Issue 3 Pages 173-179
Keywords Operant conditioning; Social influence; Individual strategy; Chimpanzee
Abstract A group of six chimpanzees was placed in a social learning situation, without training. The learning task was an operant conditioning situation; that is, a subject had to pull two handles simultaneously to cause a piece of fruit to fall into the cage. Only three individuals acquired the operant behaviour. For the operant individuals, social influences on the expression of the learning task were then examined; the dominant chimpanzee during feeding had an inhibiting effect when close to the operant subjects. Depending on the subject, social factors may influence not only the specific expression of what is learnt, but also the nature of what is learnt. Chimpanzees appear to experience situations differently: they develop an individual problem-solving strategy according to their social relationships even if the experimental procedure is the same for all.
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Notes Approved no
Call Number refbase @ user @ Serial 569
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Author Petherick, J.C.; Seawright, E.; Waddington, D.
Title Influence of motivational state on choice of food or a dustbathing/foraging substrate by domestic hens Type Journal Article
Year 1993 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume (up) 28 Issue 3 Pages 209-220
Keywords Food; Learning; Litter; Motivation; Poultry; Preference
Abstract Domestic hens were trained to run a Y-maze and make an association between differently coloured doorways and access to food pellets or sand. The hens were tested for their choice of doorway when the goals were not visible from the choice point and when they were food or sand deprived. Hens made the choice appropriate to their deprivation state (correct choice) significantly more often for food than sand and were faster at choosing and entering the goal box when food deprived. In a follow up experiment, the goals were visible from the choice point. Again the hens chose correctly significantly more often when food than sand deprived and made the choice and entered the goal box faster when food deprived. Thus, failure to choose sand in the first experiment was not due to an inability to learn the association, but appears to result from a strong motivation to feed in the Y-maze, even when not food deprived, and a weak motivation to dustbathe or forage, even when sand deprived.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 3608
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Author Smith, S.F.; Appleby, M.C.; Hughes, B.O.
Title Problem solving by domestic hens: opening doors to reach nest sites Type Journal Article
Year 1990 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume (up) 28 Issue 3 Pages 287-292
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Abstract In a trial of cage designs for laying hens, eggs were discovered in dust baths where access was restricted by a closed door during the normal laying period (08:00-13:00 h). Observations showed that the hens in these dust bath treatments had developed methods of opening the doors in order to lay in the baths. Three different methods of opening were observed. An average time of 34.4 min was spent attempting to open the doors before access was finally achieved. This implies a strong nesting motivation in these hens. The proportion of eggs laid in the dust baths increased (with occasional fluctuations) over a 24-week period. Door opening is likely to have initially developed in one individual in each cage through a trial and error basis, and then have been learned by cage mates through imitation. The speed and efficiency of door opening was not found to increase with experience or time.
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ISSN 0168-1591 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6164
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Author Boyd, L.E.
Title The behaviour of Przewalski's horses and its importance to their management Type Journal Article
Year 1991 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume (up) 29 Issue 1-4 Pages 301-318
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Abstract Przewalski's horses (Equus przewalskii) are believed to be extinct in the wild; the current known population of 797 animals exists wholly in zoos. The Species Survival Commission of the International Union for Conservation of Nature and Natural Resources is proposing to reintroduce this endangered species into its former Mongogian habitat within the next decade. Knowledge of the behavior of harem-forming equids in general and of Przewalski's horses in particular, is of great importance to the captive propagation and eventual reintroduction of this species. Horses are rarely solitary by nature. Solitary captive animals are prone to pacing. Juvenile male feral horses (Equus caballus) form bachelor herds upon dispersal from their natal band. Zoos can set up bachelor herds as a way of managing surplus males. The older, more dominant feral horse bachelors are the first to acquire mares. Bachelors do not generally obtain females until they are 4 or 5 years of age. The first females acquired are usually 1- and 2-year-old fillies dispersing from their natal band. Because of the age differential, the stallions are generally dominant to their mares. Behavioral impotence may result if captive stallions are given a harem at too young an age, especially if the harem contains older, more dominant, females. Typical harem sizes in the wild are 3-5 mares. Captive stallions with too large a harem may become either apathetic or aggressive toward their mares. Wild horses spend 60-70% of their time foraging. Captive animals may quickly consume their limited amounts of food and develop vices out of boredom. Provision of hay ad libitum reduces the amount of pacing seen in captive animals, and virtually eliminates coprophagy.
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Call Number Equine Behaviour @ team @ Serial 2214
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Author Penzhorn,B.L.; Novellie, P.A.
Title Some behavioural traits of Cape mountain zebras and their implications for the management of asmall conservation area Type Journal Article
Year 1991 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume (up) 29 Issue 1-4 Pages 293-299
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Abstract The social organisation of mountain zebras (Equus zebra zebra) consists of breeding herds (1 male, 2.4 females (range 1–5) and their offspring) which remain stable over many years, and bachelor groups. Foals leave their maternal herds of their own accord. In a free-ranging population the behaviour of the foals in leaving the herd is probably an adequate mechanism to prevent inbreeding, but inbreeding may occur in confined populations. Individual recognition by means of stripe pattern allows a check to be kept.

Seasonal movement of mountain zebras is associated with a relative change in diet quality (as indicated by crude protein contents of preferred food plants and of faeces) between summer and winter habitats. Any conservation area should be large and varied enough to include both summer and winter habitats. Mountain zebras favour taller grass than most antelope species, harvesting their food at 50–150 mm from the ground. The existence of large populations of antelope could, therefore, be detrimental to zebras.
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1465
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Author Walther, F.R.
Title On herding behavior Type Journal Article
Year 1991 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume (up) 29 Issue 1-4 Pages 5-13
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Abstract Herding behavior in ungulates is executed mainly by males. There are several forms of herding: guarding a single estrous female; rounding up a bunch of females during the rutting season; territorial herding by which a male keeps females inside his territory; herding of a moving, permanent, harem group; social herding in which group members of both sexes are herded by one dominant male. When put into this sequence, a phenotypical trend is illustrated, leading from an intimate connection of herding with mating behavior toward an increasing independence from sexual behavior and culminating in a complete socialization of herding. Aspects and problems of herding behavior are the recognition of, and the animal's respect for, partners in gregarious species; the animal “taking offense” at activities of others which deviate from its own activity; the active coordination and synchronization of group activities; the use of, and the effects of, threat, dominance and courtship displays in herding; the possibility of substitution among expressive displays in relation to partners of different sex; the communicative function of the animal's orientation relative to the partner; social hierarchy and leadership in a group; the possibility of interspecific herding, particularly in man-animal relationships, which is closely linked to the process of domestication.
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Notes Approved no
Call Number Serial 2035
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