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Related Experiment Video

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Antarctic skuas recognize individual humans.

Won Young Lee1, Yeong-Deok Han2, Sang-Im Lee3,4

  • 1Division of Polar Life Sciences, Korea Polar Research Institute, Incheon, 406-840, Republic of Korea. wonyounglee@kopri.re.kr.

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|March 5, 2016
PubMed
Summary

Wild animals, like Antarctic brown skuas, can recognize individual humans. This study shows skuas learn to distinguish people who disturb their nests, supporting cognitive ability hypotheses.

Keywords:
Antarctic birdBrown skuaCognitionHuman recognitionPre-exposure

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Area of Science:

  • Animal Behavior
  • Cognitive Ecology
  • Avian Behavior

Background:

  • Wild animals' ability to recognize individual humans is a recent finding.
  • Two hypotheses explain this: high cognitive abilities or pre-exposure to human stimuli.
  • Antarctic brown skuas inhabit remote areas with recent human exposure.

Purpose of the Study:

  • To investigate individual human recognition in wild Antarctic brown skuas.
  • To test hypotheses regarding the drivers of human recognition in wildlife.

Main Methods:

  • Observing brown skua (Stercorarius antarcticus) responses to repeated nest intrusions by humans.
  • Comparing skua reactions to a familiar (nest-disturbing) human versus a neutral human.
  • Assessing changes in skua defensive behaviors (distance, aggression) with repeated encounters.

Main Results:

  • Brown skua parents increased defensive responses (further distance, aggression) with repeated nest visits.
  • All tested skua pairs selectively attacked the nest intruder.
  • Skuas ignored a neutral human not previously associated with nest disturbance.

Conclusions:

  • Antarctic brown skuas can recognize individual humans who interact with their nests.
  • Findings support the high cognitive abilities hypothesis.
  • Individual recognition abilities can be acquired rapidly through direct interaction.