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    Corina Logan (she/her) (corinalogan@nerdculture.de)'s status on Tuesday, 23-Jan-2024 06:53:28 JSTCorina Logan (she/her)Corina Logan (she/her)
    in reply to

    #1 Grackle vs Crow -Aesops Fable water tube tests
    - Heavy vs light: most grackles & all crows preferred to drop functional heavy objects. Score 1:1
    - Wide vs narrow: no grackles had a tube preference, while most crows preferred to drop objects into the functional wide tube. Score: 1:2

    Video https://www.youtube.com/watch?v=l5rHHb52vAs. I ran these tests on great-tailed grackles & New Caledonian crows using similar methods & apparatuses. #TheGrackleProject

    GTGR: https://peerj.com/articles/1975
    Crow: http://dx.plos.org/10.1371/journal.pone.0103049

    In conversationTuesday, 23-Jan-2024 06:53:28 JST from nerdculture.depermalink

    Attachments

    1. See How These Birds Solve Tricky Puzzles | National Geographic
      from National Geographic
      A type of blackbird has been shown to modify its behavior to solve problems. The great-tailed grackle's range has expanded north through Mexico and into the ...
    2. Domain not in remote thumbnail source whitelist: dfzljdn9uc3pi.cloudfront.net
      Behavioral flexibility and problem solving in an invasive bird
      Behavioral flexibility is considered an important trait for adapting to environmental change, but it is unclear what it is, how it works, and whether it is a problem solving ability. I investigated behavioral flexibility and problem solving experimentally in great-tailed grackles, an invasive bird species and thus a likely candidate for possessing behavioral flexibility. Grackles demonstrated behavioral flexibility in two contexts, the Aesop’s Fable paradigm and a color association test. Contrary to predictions, behavioral flexibility did not correlate across contexts. Four out of 6 grackles exhibited efficient problem solving abilities, but problem solving efficiency did not appear to be directly linked with behavioral flexibility. Problem solving speed also did not significantly correlate with reversal learning scores, indicating that faster learners were not the most flexible. These results reveal how little we know about behavioral flexibility, and provide an immense opportunity for future research to explore how individuals and species can use behavior to react to changing environments.
    3. Domain not in remote thumbnail source whitelist: storage.googleapis.com
      Modifications to the Aesop's Fable Paradigm Change New Caledonian Crow Performances
      While humans are able to understand much about causality, it is unclear to what extent non-human animals can do the same. The Aesop's Fable paradigm requires an animal to drop stones into a water-filled tube to bring a floating food reward within reach. Rook, Eurasian jay, and New Caledonian crow performances are similar to those of children under seven years of age when solving this task. However, we know very little about the cognition underpinning these birds' performances. Here, we address several limitations of previous Aesop's Fable studies to gain insight into the causal cognition of New Caledonian crows. Our results provide the first evidence that any non-human animal can solve the U-tube task and can discriminate between water-filled tubes of different volumes. However, our results do not provide support for the hypothesis that these crows can infer the presence of a hidden causal mechanism. They also call into question previous object-discrimination performances. The methodologies outlined here should allow for more powerful comparisons between humans and other animal species and thus help us to determine which aspects of causal cognition are distinct to humans.
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