For centuries, the avian family Corvidae —which includes crows, ravens, rooks, and jays—has been dismissed by biologists as mere "bird-brains." However, a surge of research over the past two decades has demolished this prejudice. Corvids demonstrate tool use, episodic-like memory, causal reasoning, and even social manipulation. These abilities rival those of great apes and cetaceans, despite the vast differences in neuroanatomy.
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5. B (manufacture) 6. D (episodic) 7. E (past) For centuries, the avian family Corvidae —which includes
Social intelligence is another hallmark of corvids. Ravens have been observed manipulating competitors during food sharing. They lead rivals away from hidden carcasses using deceptive behavior, only to double back alone. This tactical deception requires "theory of mind"—the ability to infer another's knowledge state. While once considered unique to humans, theory of mind in corvids suggests convergent evolution: different brain structures solving similar ecological problems.
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Meta Description: Unlock the secrets of corvid intelligence for your IELTS Reading test. This guide provides detailed answers, passage analysis, vocabulary breakdowns, and "extra quality" tips to boost your Band Score. Introduction: Why Corvids Matter for IELTS If you have been preparing for the IELTS Academic Reading test, you may have encountered a passage about "The Intelligence of Corvids." These birds—ravens, crows, magpies, and jays—are frequent stars of IELTS Reading sections because they challenge the traditional human-centric view of intelligence. The keyword search "the intelligence of corvids ielts reading answers extra quality" suggests that test-takers are not just looking for correct answers (the standard answer key) but for extra quality : deeper explanations, passage mapping strategies, and vocabulary builders.
Beyond tool manufacture, corvids possess what psychologists call "episodic memory"—the ability to recall specific past events, including what happened, where, and when. In a landmark study at the University of Cambridge, scrub jays ( Aphelocoma californica ) cached food in two distinct locations. They learned that one type of food perished quickly while the other remained edible. When recovering their caches later, the jays preferentially searched for the durable food first, ignoring the perishable item. This indicates they mentally traveled back in time to encode the what-where-when of their caching. E (past) Social intelligence is another hallmark of
| Word/Phrase | Definition | Example from Passage | |-------------|------------|----------------------| | Demolished (v) | Destroyed an idea or belief | "...demolished this prejudice" | | Spontaneously (adv) | Without external cause or training | "Betty spontaneously bent the wire" | | Episodic memory (n) | Memory of specific events with time/place | "Scrub jays demonstrate episodic memory" | | Analogous (adj) | Similar in function but not structure | "The pallium is functionally analogous" | | Convergent evolution (n) | Unrelated species evolve similar traits | "Convergent evolution...different brain structures, similar solutions" | | Cached (v) | Stored or hidden for future use | "Cached food in two distinct locations" |