Paragraph A states: "Traditional science supported this view, maintaining that the avian brain was too small and primitive to support higher cognitive functions." This matches the statement perfectly. 8. Answer: FALSE
Dr. Nathan Emery stood before the aviary, a stopwatch in one hand and a piece of wire in the other. Inside the enclosure, a female crow named watched him with intense, obsidian eyes. This scene wasn't just a moment of scientific observation; it was the setting for one of the most famous experiments in animal cognition—a study that frequently appears in IELTS Reading passages under titles like "The Intelligence of Corvids" or "Birds of a Feather."
Paragraph D outlines how ravens use "deceptive maneuvering" by pretending to cache food in one spot and moving it later if they notice a competitor watching them.
The intelligence of corvids—a bird family that includes crows, ravens, rooks, magpies, and jays—has become a foundational topic in cognitive biology and a frequent subject in academic English examinations like the IELTS. For candidates preparing for the IELTS Reading test, passages focusing on avian cognition present a unique set of challenges, combining complex scientific terminology with sophisticated rhetorical structures.
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
Understanding the Intelligence of Corvids: IELTS Reading Guide and Answers
Paragraph B focuses entirely on the physical brain structure of the bird. It highlights the "nidopallium," compares the crow's brain-to-body mass ratio to a chimpanzee, and explains how this anatomy supports executive functioning. This fits perfectly with "The anatomical basis of avian genius." 3. Answer: viii
Paragraph D explains that a scrub-jay will re-hide its food if watched by a rival, but crucially, it only does this if the jay "has previously stolen food from another bird itself." The bird is anticipating deception based on its own past actions. This matches heading v. 5. Answer: iv
If this were the actual reading text, here is how the answers would map out: Nathan Emery stood before the aviary, a stopwatch
Shifts focus to scrub-jays, caching behaviors, and the concept of mental time travel.
The cognitive prowess of corvids stems from the , an area of the avian brain that functions analogously to the mammalian prefrontal cortex. The NCL is densely packed with neurons, enabling high-level executive functions, working memory, and behavioral flexibility. This convergent evolution demonstrates that nature has arrived at complex intelligence through two entirely different anatomical pathways, making it a favorite subject for IELTS passages that explore scientific history, paradigms shifts, and evolutionary biology. Core Cognitive Abilities Explored in IELTS Texts
Paragraph A mentions the historical context in the very first sentence, noting that for centuries, the term "birdbrain" was used as an insult to imply a lack of intelligence.
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. The intelligence of corvids—a bird family that includes
Found in Paragraph C: "...the jays prioritized digging up the delicious worms [wax worms]." 8. dominant rival
While many animals use tools, corvids—particularly the New Caledonian crow ( Corvus moneduloides )—demonstrate the rare ability to manufacture and modify them. In wild and laboratory settings, these birds select specific twigs, strip them of leaves, and fashion hooks to retrieve insects from deep crevices. When presented with unfamiliar materials in experiments, such as straight pieces of wire, they spontaneously bend the wire into hooks to retrieve food baskets from vertical tubes. This behavior signifies abstract planning rather than mere trial-and-error learning. 2. Mental Time Travel (Episodic Memory and Planning)
Performed or occurring as a result of a sudden inner impulse or inclination, without premeditation or external push. Essential Test-Taking Strategies for This Topic
Answer: tools (or "tool use").
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