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Author (up) Fischhoff, I.R.; Sundaresan, S.R.; Cordingley, J.; Rubenstein, D.I. url  doi
openurl 
  Title Habitat use and movements of plains zebra (Equus burchelli) in response to predation danger from lions Type Journal Article
  Year 2007 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.  
  Volume 18 Issue 4 Pages 725-729  
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  Abstract Prey species must adapt their behavior to avoid predation. As a key prey item for lions (Panthera leo), plains zebras (Equus burchelli) were expected to respond to immediate threats posed by lions in their area. In addition, zebras were predicted to exhibit behavior tuned to reduce the potential for encounters with lions, by modifying their movement patterns in the times of day and habitats of greatest lion danger. We studied a population of approximately 600 plains zebra living in Ol Pejeta Conservancy, Kenya. We found that zebra abundance on or near a grassland patch was lower if lions had also been observed on that patch during the same day. Predation danger was highest in grassland habitat during the night, when lions were more active. Zebra sightings and global positioning system radio collar data indicated that zebras also reduced their use of grassland at night, instead using more woodland habitat. Zebras moved faster and took sharper turns in grassland at night. It is hypothesized that these more erratic movements assist zebras in avoiding detection or capture by lions.  
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  Notes 10.1093/beheco/arm036 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4360  
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Author (up) FitzGibbon, C. D. doi  openurl
  Title The costs and benefits of predator inspection behaviour in Thomson's gazelles Type Journal Article
  Year 1994 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 34 Issue 2 Pages 139-148  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 524  
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Author (up) Franks, D.; James, R.; Noble, J.; Ruxton, G. doi  openurl
  Title A foundation for developing a methodology for social network sampling Type Journal Article
  Year 2009 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 63 Issue 7 Pages 1079-1088-1088  
  Keywords Biomedical and Life Sciences  
  Abstract Researchers are increasingly turning to network theory to understand the social nature of animal populations. We present a computational framework that is the first step in a series of works that will allow us to develop a quantitative methodology of social network sampling to aid ecologists in their social network data collection. To develop our methodology, we need to be able to generate networks from which to sample. Ideally, we need to perform a systematic study of sampling protocols on different known network structures, as network structure might affect the robustness of any particular sampling methodology. Thus, we present a computational tool for generating network structures that have user-defined distributions for network properties and for key measures of interest to ecologists. The user defines the values of these measures and the tool will generate appropriate network randomizations with those properties. This tool will be used as a framework for developing a sampling methodology, although we do not present a full methodology here. We describe the method used by the tool, demonstrate its effectiveness, and discuss how the tool can now be utilized. We provide a proof-of-concept example (using the assortativity measure) of how such networks can be used, along with a simulated egocentric sampling regime, to test the level of equivalence of the sampled network to the actual network.  
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  Publisher Springer Berlin / Heidelberg Place of Publication Editor  
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  ISSN 0340-5443 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5194  
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Author (up) Garott, R.A. doi  openurl
  Title Sex Ratios and Differential Survival of Feral Hors Type Journal Article
  Year 1991 Publication Journal of Animal Ecology Abbreviated Journal J Anim Ecol  
  Volume 60 Issue 3 Pages 929-936  
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  Abstract (1) Sex and age data were collected on 60 111 feral horses (Equus caballus L.) removed from eighty-nine areas in Nevada, Wyoming, and Oregon between 1976 and 1987. (2) Sex ratios of young seldom differed from parity; however, sex ratios of adults were commonly skewed toward females. No evidence of differential capture probability between adult males and females could be detected; therefore, skewed adult sex ratios were attributed to differential survival. (3) Age-specific trends in sex ratios indicated that the proportion of males steadily decreased from near parity in foals, to lows of 0.61-0.77 in the 4-5-year age-classes. The trend then reversed with males becoming predominant (1.08-1.36) in the > 10 years age-class. (4) Population simulations suggest that survival diffentials of 0.05-0.07, favouring females to 4 years of age, and 0.02-0.04 favouring males in older age-classes were required to mimic observed age-specific sex ratio changes. To obtain the high proportion of males in the > 10-years age-class, onset of senescence also had to be earlier for females. (5) Causes for differential survival in the immature age-classes are uncertain, but may relate to behavioural or metabolic differences between the sexes. Differential survival between adult males and females is attributed to differences in the energetic costs of reproduction and disparity in their reproductive life spans.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2294  
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Author (up) Ginsberg, J. R; Rubenstein, D. I. doi  openurl
  Title Sperm competiton and variation in zebra mating behaviour Type Journal Article
  Year 1990 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 26 Issue 6 Pages 427-434  
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  Abstract Data are presented on the breeding behavior of two zebra species to test whether intra- and interspecific variation in male reproductive behavior and physiology are correlated with differences in female promiscuity. In one species, plains zebra (Equus burchelli) females live in closed membership single male groups and mate monandrously. In the other species, the Grevy's zebra (E. grevyi) females live in groups whose membership is much more temporary. Typically, associations with individual males are brief and mating is polyandrous. However, some females – those having just given birth – reside with one male for long periods, mating monandrously. These differences in female mating behavior generate variability in the potential for sperm competition. We show that behavioral differences in male investment in reproductive activities correlate with the potential for sperm competition. When mating with promiscuous mares, Grevy's zebra stallions made a greater investment in reproductive behavior (calling, mounting, ejaculations) than did stallions of either species when mating with monandrous females. The evolution of large testes size in the Grevy's zebra, when compared to the congeneric plains zebra, horse, and mountain zebra, allows for this increased investment.  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1113  
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Author (up) Giraldeau, Luc-Alain url  isbn
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  Title The ecology of information use Type Book Chapter
  Year 1997 Publication Behavioural ecology : an evolutionary approach Abbreviated Journal  
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  Publisher Blackwell Science Place of Publication Cambridge, Mass. Editor Krebs, J.R.; Davies, N.B.  
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  ISSN ISBN 0865427313 9780865427310 Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ 35114973 Serial 4277  
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Author (up) Healy,S.; Braithwaite, V doi  openurl
  Title Cognitive ecology: a field of substance? Type Journal Article
  Year 2000 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol  
  Volume 15 Issue 1 Pages 22-26  
  Keywords Cognitive ecology; Neuroethology; Cognition; Ecology; Evolution; Orientation mechanisms  
  Abstract In 1993, Les Real invented the label 'cognitive ecology'. This label was intended for work that brought cognitive science and behavioural ecology together. Real's article stressed the importance of such an approach to the understanding of behaviour. At the end of a decade in which more interdisciplinary work on behaviour has been seen than for many years, it is time to assess whether cognitive ecology is a label describing an active field.  
  Address Division of Biological Sciences, King's Buildings, University of Edinburgh, West Mains Road, Edinburgh, UK EH9 3JT  
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  Language English Summary Language Original Title  
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  ISSN 0169-5347 ISBN Medium  
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  Notes PMID:10603501 Approved no  
  Call Number refbase @ user @ Serial 837  
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Author (up) Henzi, S.; Lusseau, D.; Weingrill, T.; van Schaik, C.; Barrett, L. doi  openurl
  Title Cyclicity in the structure of female baboon social networks Type Journal Article
  Year 2009 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 63 Issue 7 Pages 1015-1021-1021  
  Keywords Biomedical and Life Sciences  
  Abstract There is an established and very influential view that primate societies have identifiable, persistent social organizations. It assumes that association patterns reflect long-term strategic interests that are not qualitatively perturbed by short-term environmental variability. We used data from two baboon troops in markedly different habitats over three consecutive seasons to test this assumption. Our results demonstrate pronounced cyclicity in the extent to which females maintained differentiated relationships. When food was plentiful, the companionships identified by social network analysis in the food-scarce season disappeared and were replaced by casual acquaintanceships more representative of mere gregariousness. Data from the fourth, food-scarce, season at one site indicated that few companions were re-united. It is likely that this reflected stochastic variation in individual circumstances. These results suggest that attention could profitably be paid to the effects of short-term local contingencies on social dynamics, and has implications for current theories of primate cognitive evolution.  
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  Publisher Springer Berlin / Heidelberg Place of Publication Editor  
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  ISSN 0340-5443 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5203  
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Author (up) Hildenbrandt, H.; Carere, C.; Hemelrijk, C.K. url  doi
openurl 
  Title Self-organized aerial displays of thousands of starlings: a model Type Journal Article
  Year 2010 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.  
  Volume 21 Issue 6 Pages 1349-1359  
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  Abstract Through combining theoretical models and empirical data, complexity science has increased our understanding of social behavior of animals, in particular of social insects, primates, and fish. What are missing are studies of collective behavior of huge swarms of birds. Recently detailed empirical data have been collected of the swarming maneuvers of large flocks of thousands of starlings (Sturnus vulgaris) at their communal sleeping site (roost). Their flocking maneuvers are of dazzling complexity in their changes in density and flock shape, but the processes underlying them are still a mystery. Recent models show that flocking may arise by self-organization from rules of co-ordination with nearby neighbors, but patterns in these models come nowhere near the complexity of those of the real starlings. The question of this paper, therefore, is whether such complex patterns can emerge by self-organization. In our computer model, called StarDisplay, we combine the usual rules of co-ordination based on separation, attraction, and alignment with specifics of starling behavior: 1) simplified aerodynamics of flight, especially rolling during turning, 2) movement above a “roosting area” (sleeping site), and 3) the low fixed number of interaction neighbors (i.e., the topological range). Our model generates patterns that resemble remarkably not only qualitative but also quantitative empirical data collected in Rome through video recordings and position measurements by stereo photography. Our results provide new insights into the mechanisms underlying complex flocking maneuvers of starlings and other birds.  
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  Call Number Equine Behaviour @ team @ Serial 5403  
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Author (up) Hofmeester, T.R.; Cromsigt, J.P.G.M.; Odden, J.; Andrén, H.; Kindberg, J.; Linnell, J.D.C. url  doi
openurl 
  Title Framing pictures: A conceptual framework to identify and correct for biases in detection probability of camera traps enabling multi-species comparison Type Journal Article
  Year 2019 Publication Ecology and Evolution Abbreviated Journal Ecol Evol  
  Volume Issue Pages  
  Keywords animal characteristics; detectability; environmental variables; mammal monitoring; reuse of data; trail camera  
  Abstract Abstract Obtaining reliable species observations is of great importance in animal ecology and wildlife conservation. An increasing number of studies use camera traps (CTs) to study wildlife communities, and an increasing effort is made to make better use and reuse of the large amounts of data that are produced. It is in these circumstances that it becomes paramount to correct for the species- and study-specific variation in imperfect detection within CTs. We reviewed the literature and used our own experience to compile a list of factors that affect CT detection of animals. We did this within a conceptual framework of six distinct scales separating out the influences of (a) animal characteristics, (b) CT specifications, (c) CT set-up protocols, and (d) environmental variables. We identified 40 factors that can potentially influence the detection of animals by CTs at these six scales. Many of these factors were related to only a few overarching parameters. Most of the animal characteristics scale with body mass and diet type, and most environmental characteristics differ with season or latitude such that remote sensing products like NDVI could be used as a proxy index to capture this variation. Factors that influence detection at the microsite and camera scales are probably the most important in determining CT detection of animals. The type of study and specific research question will determine which factors should be corrected. Corrections can be done by directly adjusting the CT metric of interest or by using covariates in a statistical framework. Our conceptual framework can be used to design better CT studies and help when analyzing CT data. Furthermore, it provides an overview of which factors should be reported in CT studies to make them repeatable, comparable, and their data reusable. This should greatly improve the possibilities for global scale analyses of (reused) CT data.  
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  Publisher John Wiley & Sons, Ltd Place of Publication Editor  
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  ISSN 2045-7758 ISBN Medium  
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  Notes doi: 10.1002/ece3.4878 Approved no  
  Call Number Equine Behaviour @ team @ Serial 6518  
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