ArticleProceedings. Biological sciences2017
Can hook-bending be let off the hook? Bending/unbending of pliant tools by cockatoos.
Article in Proceedings. Biological sciences, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
24 citing papers in PubMed.
- The flexible, the stereotyped and the in-between: putting together the combinatory tool use origins hypothesis.Biological reviews of the Cambridge Philosophical Society · 2026Review
- Seizing opportunities: Object neophobia as a factor mediating technical innovation in Goffin´s cockatoos?PloS one · 2025Article
- Mechanical Problem Solving in Goffin's Cockatoos-Towards Modeling Complex Behavior.Adaptive behavior · 2024Article
- Hooded crows (Corvus cornix) manufacture objects relative to a mental template.Animal cognition · 2024Article
- Dunking rusk: innovative food soaking behaviour in Goffin's cockatoos (Biology letters · 2023Article
- Ratcheting up tool innovation in Goffin's cockatoos (Ethology : formerly Zeitschrift fur Tierpsychologie · 2023Article
- Innovative composite tool use by Goffin's cockatoos (Cacatua goffiniana).Scientific reports · 2022Article
- Extending the Reach of Tooling Theory: A Neurocognitive and Phylogenetic Perspective.Topics in cognitive science · 2021Article
- Goffin's cockatoos discriminate objects based on weight alone.Biology letters · 2021Article
- Object manufacture based on a memorized template: Goffin's cockatoos attend to different model features.Animal cognition · 2021Article
- Problem Solving in Animals: Proposal for an Ontogenetic Perspective.Animals : an open access journal from MDPI · 2021Review
- String-pulling in the Goffin's cockatoo (Cacatua goffiniana).Learning & behavior · 2021Article
- Innovative problem solving in macaws.Learning & behavior · 2021Article
- Convergent evolution of complex cognition: Insights from the field of avian cognition into the study of self-awareness.Learning & behavior · 2021Review
- Goffin's Cockatoos (Frontiers in psychology · 2021Article
- Individual Goffin´s cockatoos (Cacatua goffiniana) show flexible targeted helping in a tool transfer task.PloS one · 2021Article
- Current Understanding of the "Insight" Phenomenon Across Disciplines.Frontiers in psychology · 2021Review
- Old and New Approaches to Animal Cognition: There Is Not "One Cognition".Journal of Intelligence · 2020Review
- Using an Innovation Arena to compare wild-caught and laboratory Goffin's cockatoos.Scientific reports · 2020Article
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Authors and funding
4 authors.
Funding
Abstract
The spontaneous crafting of hook-tools from bendable material to lift a basket out of a vertical tube in corvids has widely been used as one of the prime examples of animal tool innovation. However, it was recently suggested that the animals' solution was hardly innovative but strongly influenced by predispositions from habitual tool use and nest building. We tested Goffin's cockatoo, which is neither a specialized tool user nor a nest builder, on a similar task set-up. Three birds individually learned to bend hook tools from straight wire to retrieve food from vertical tubes and four subjects unbent wire to retrieve food from horizontal tubes. Pre-experience with ready-made hooks had some effect but was not necessary for success. Our results indicate that the ability to represent and manufacture tools according to a current need does not require genetically hardwired behavioural routines, but can indeed arise innovatively from domain general cognitive processing.
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