Tool-use and instrumental learning in the Eurasian jay (Garrulus glandarius)

@article{Cheke2011TooluseAI,  title={Tool-use and instrumental learning in the Eurasian jay (Garrulus glandarius)},  author={Lucy G. Cheke and Christopher D. Bird and Nicola S. Clayton},  journal={Animal Cognition},  year={2011},  volume={14},  pages={441-455},  url={https://api.semanticscholar.org/CorpusID:9123984}}
Results indicate that Eurasian jays use the incremental approach of the food reward as a conditioned reinforcer allowing them to solve tasks involving raising the water level and that this learning is facilitated by the presence of causal cues.

105 Citations

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34 References

Tool selectivity in a non-primate, the New Caledonian crow (Corvus moneduloides)

An experiment is presented showing that New Caledonian crows are able to choose tools of the appropriate size for a novel task, without trial-and-error learning.

Non-tool-using rooks, Corvus frugilegus, solve the trap-tube problem

This work developed an experimental design that enabled them to test non-tool-using rooks, Corvus frugilegus, and found that three out of seven rooks solved the modified trap-tube problem task, showing that the ability to solve the trap-Tube problem is not restricted to tool-using animals.

Cooperative problem solving in rooks (Corvus frugilegus)

Results may indicate that cooperation in chimpanzees is underpinned by more complex cognitive processes than that in rooks, which may arise from the fact that while both chimpanzees and rooks form cooperative alliances, chimpanzees, but not rooking, live in a variable social network made up of competitive and cooperative relationships.

Insightful problem solving and creative tool modification by captive nontool-using rooks

It is shown that rooks, a species that does not use tools in the wild appears to possess an understanding of tools rivaling habitual tool users such as New Caledonian crows and chimpanzees, suggesting that the ability to represent tools may be a domain-general cognitive capacity rather than an adaptive specialization.

Cognitive Processes Associated with Sequential Tool Use in New Caledonian Crows

The ability of subjects to use three tools in sequence reveals a competence beyond that observed in any other species, and emphasises the importance of parsimony in comparative cognitive science.

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New Caledonian crows with previous experience of the behaviours in stages 1–3 linked them into a novel sequence to solve the problem on the first trial, suggesting that high innovation rates in the wild may reflect complex cognitive abilities that supplement basic learning mechanisms.

Selection of tool diameter by New Caledonian crows Corvus moneduloides

New Caledonian crows handling of tool diameter is examined, showing that when facing three loose sticks that were usable as tools, they preferred the thinnest one, and that they manufacture a tool of a suitable diameter from a tree branch according to the diameter of the hole through which the tool will be inserted.

Do wild New Caledonian crows (Corvus moneduloides) attend to the functional properties of their tools?

New Caledonian crows are the most proficient non-hominin tool manufacturers but the cognition behind their remarkable skills remains largely unknown, and it is indicated that the crows do not consistently attend to the presence or orientation of barbs on pandanus tools.

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