Ielts Reading Answers | The Intelligence Of Corvids
However, the narrative shifts to the famous "wire-bending" experiment. Dr. Emery placed a small bucket of food at the bottom of a vertical tube. Beside it, he placed a straight piece of wire. The male crow, Abel, attempted to grab the bucket and failed. But Betty, the female, picked up the wire.
3. "The Intelligence of Corvids" IELTS Reading Answers & Analysis
Corvids are renowned for their exceptional problem-solving abilities. They have been observed using tools to obtain food, such as sticks to dig up grubs or rocks to crack open nuts. In one famous experiment, a crow was presented with a piece of food attached to a string. The crow was able to figure out how to retrieve the food by pulling on the string with its beak. This level of problem-solving is rare in the animal kingdom and is often seen as a hallmark of high intelligence.
Below is a summary of typical matching and multiple-choice answers found in this practice test: Question / Action Corresponding Intelligence Trait (Answer) Birds opened boxes to obtain food. . Birds pulled ropes to get food. Corvids can work together to achieve a goal . Birds hid food from other birds. Corvids recognize individual birds . Birds built a fake nest. Corvids protect themselves by tricking enemies . the intelligence of corvids ielts reading answers
The text might say corvids have a large brain-to-body ratio. A question might say they have the "largest brains of all birds." If the text doesn't explicitly compare them to every other bird, the answer is Not Given .
How are corvids' intelligence often compared to that of other animals? Answer: Primates.
Research shows corvids can remember thousands of cache locations for months, which is a hallmark of "episodic-like" memory. Birds built a nest that was not real However, the narrative shifts to the famous "wire-bending"
One of the clearest indicators of higher intelligence is the ability to not just use a tool, but to modify one. The New Caledonian crow is the poster child for this behavior. In controlled experiments, these crows were presented with a stick too short to reach a piece of food and a piece of wire. Without any training, the crows bent the wire into a hook to retrieve the food. This spontaneous manufacture of a novel tool demonstrates —the ability to understand that modifying an object changes its physical effect on the environment.
– Explanation: The passage explicitly describes a crow pretending to hide food in one spot while keeping it in its throat.
Evidence of a bird's capability to understand physical principles like liquid displacement. Questions 6–9 Beside it, he placed a straight piece of wire
Careful consideration of future needs or events.
– Explanation: The passage states that tactical deception is a "hallmark of advanced intelligence" but does not claim corvids are the only non-humans to do this.
The physiological basis for this intelligence lies in the avian brain structure. Although they lack a cerebral cortex, corvids possess a densely packed cluster of neurons known as the nidopallium, which functions similarly to the prefrontal cortex in mammals. This high neuronal density allows for complex information processing, supporting their ability to navigate social hierarchies and solve multi-step puzzles.
Paragraph C details the experiment with Western scrub-jays caching perishable wax worms and non-perishable pine nuts, illustrating their ability to remember how much time had passed ( when ) so they wouldn't dig up rotten food.
The corvids' intelligence – from tool making and counting to face recognition and deception – is presented through well‑known scientific studies (Goodall, Kacelik, Marzloff, Clayton & Emery, Koehler). Understanding how each experiment connects to a specific cognitive ability is the key to answering the matching questions correctly.