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Intolerant baboons avoid observer proximity, creating biased inter-individual association patterns.

Andrew T L Allan1,2, Amy F White3, Russell A Hill4,3,5

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Observer proximity influences animal social networks. Closer observation distances reveal biased social association patterns in chacma baboons (Papio ursinus griseipes), impacting network analysis reliability.

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Area of Science:

  • Ethology
  • Behavioural Ecology
  • Primatology

Background:

  • Social network analysis is vital for understanding animal social structures.
  • Direct observation of habituated wild animals is a common data collection method.
  • Previous research indicated individual differences in responses to observer presence in chacma baboons.

Purpose of the Study:

  • To investigate how observer distance affects social association patterns in chacma baboons.
  • To determine if observer presence influences the reliability of social network metrics.
  • To assess the impact of observer proximity on behavioural ecology studies.

Main Methods:

  • Measuring inter-individual association patterns of chacma baboons at varying observer distances.
  • Analyzing social network metrics derived from association data collected at different proximity buffers.
  • Quantifying the relationship between individual tolerance to observers and observed social associations.

Main Results:

  • A positive association was found between individual tolerance and neighbor frequency at close observer distances.
  • This association became neutral when observers were further away.
  • Association matrices and individual network metrics were not comparable across different observation distances.

Conclusions:

  • Observer presence and behavior demonstrably influence habituated animal association patterns.
  • This finding has significant implications for the validity of social network analyses in behavioural ecology.
  • Future studies must account for observer effects when measuring animal social networks.