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Waterbird solves the string-pull test.

Jessika Lamarre1, David R Wilson2

  • 1Cognitive and Behavioural Ecology Program, Memorial University of Newfoundland, St John's, Canada.

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PubMed
Summary
This summary is machine-generated.

Ring-billed gulls demonstrate problem-solving by successfully completing the string-pull test. This study is the first to show this cognitive ability in waterbirds, highlighting their adaptability.

Keywords:
Larus delawarensisanimal behaviouraquatic birdcognitionmeans-end understandingproblem solving

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Area of Science:

  • Animal cognition
  • Avian behavior
  • Problem-solving in animals

Background:

  • String-pulling is a common cognitive test for problem-solving in animals.
  • Most studies focus on passeriformes and psittaciformes, with limited research on waterbirds (Aequorlitornithes).
  • Waterbirds exhibit complex foraging behaviors, suggesting potential cognitive abilities.

Purpose of the Study:

  • To investigate the problem-solving capabilities of free-living ring-billed gulls (Larus delawarensis) using a horizontal string-pull test.
  • To determine if ring-billed gulls can comprehend the association between pulling a string and obtaining a reward.
  • To assess the success rate and initial attempt success in solving the string-pull task.

Main Methods:

  • Administered a horizontal single-string-rewarded string-pull test to free-living ring-billed gulls.
  • Allowed a maximum of three trials per individual to solve the task.
  • Recorded the number of gulls that successfully solved the test and the number that succeeded on their first attempt.

Main Results:

  • 25% (26/104) of ring-billed gulls successfully solved the string-pull test.
  • 21% (22/104) of the gulls succeeded in solving the task on their first attempt.
  • Ring-billed gulls are the first waterbird species documented to solve this type of string-pull test.

Conclusions:

  • Ring-billed gulls possess the cognitive ability to solve the string-pull task, demonstrating problem-solving skills.
  • This finding expands the known diversity of problem-solving abilities within avian species, specifically including waterbirds.
  • Assessing problem-solving in species facing environmental changes is crucial for understanding their vulnerability in a changing world.