Imagine you are a crow perched on a branch, gazing intently at a cluster of insects hiding in the crevices of tree bark. Your beak alone cannot reach them. But you notice a slender twig lying nearby, and with careful precision, you bend the twig into a hook. In a few moments, you have fashioned a simple yet effective tool to extract your prey. This behavior, observed in New Caledonian crows, is a remarkable example of cognitive innovation that challenges our understanding of intelligence in the animal kingdom [246]. The crow’s use of a tool raises an intriguing question: What is the cognitive leap that allows a bird to perceive a stick as a means to an end rather than just another object in its environment?.

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Tool-Use

  • Yixin Zhu,
  • Song-Chun Zhu

摘要

Imagine you are a crow perched on a branch, gazing intently at a cluster of insects hiding in the crevices of tree bark. Your beak alone cannot reach them. But you notice a slender twig lying nearby, and with careful precision, you bend the twig into a hook. In a few moments, you have fashioned a simple yet effective tool to extract your prey. This behavior, observed in New Caledonian crows, is a remarkable example of cognitive innovation that challenges our understanding of intelligence in the animal kingdom [246]. The crow’s use of a tool raises an intriguing question: What is the cognitive leap that allows a bird to perceive a stick as a means to an end rather than just another object in its environment?.