The Intelligence Of Corvids Ielts: Reading Answers Extra Quality [verified]
Requiring you to understand the steps of a specific experiment.
The passage states: "When presented with the choice between a tube half-filled with either sawdust or water, rooks dropped the pebbles into the tube containing water and not the sawdust." This is a direct paraphrase. Option B is not mentioned. Option C contradicts the second experiment, where they preferred large stones. Pay close attention to connectors like "as a result" which require a logical outcome, not just any fact from the passage.
— They were prompted by Louis Leakey to reconsider their definitions. Requiring you to understand the steps of a
The implications of these findings are profound. They challenge the traditional hierarchy of intelligence and force us to reconsider which mental abilities are uniquely human. By studying the convergent evolution of intelligence in corvids and apes, scientists hope to unlock the universal principles of cognitive evolution. In short, these remarkable birds have not only redefined what it means to be "smart" in the animal kingdom but have also offered us a fascinating mirror through which to better understand the nature of intelligence itself.
She kept careful notes. The crows learned faster than expected. Older birds taught juveniles; mothers nudged beaks to show technique; subgroups of crows specialized — one became expert at tasks involving ropes, another at manipulating small objects. Once, when Mei hid the peanuts in a transparent box with a lid, a crow named Slate pushed another juvenile toward a stick propped against the lid. The juvenile used the stick to lift one edge and free the food. Mei observed what she later wrote in her notebook: "Not imitation alone — guidance." Option C contradicts the second experiment, where they
On a rain-silvered morning in late autumn, Mei found a small notebook beneath the eaves of her rooftop garden. The cover was flecked with mud and feathers, and inside the first page someone had written in careful looping script: "For the curious mind — observe."
Paragraph two clarifies that the "avian forebrain possesses a region called the nidopallium" which acts like a mammalian cortex. 8. brain-to-body mass ratio (OR: encephalization quotient) The implications of these findings are profound
Even more astonishing is how corvids protect their caches from thieves. If a common raven (Corvus corax) notices that another bird is watching it bury food, it will alter its behavior. The caching raven will fake a burial, hiding the food in its throat pouch, and fly off to bury it in a secret location when the onlooker is out of sight. This behavior suggests that ravens possess a "Theory of Mind"—the rare cognitive ability to attribute mental states, such as knowledge or intent, to others. The raven understands that the observer knows where the food is, and actively takes steps to deceive them.
Paragraph C states: "This behavior demonstrates that they are not merely repeating a learned reflex , but are projecting a mental image..." 9. episodic-like memory
