This article is structured to mimic an advanced IELTS academic reading passage, followed by a detailed answer key with strategies—offering "extra quality" beyond simple answer listings.

Corvids also exhibit sophisticated social intelligence. In the wild, ravens have been documented consorting with wolves, leading them to carcasses and then sharing the spoils – a form of cooperative hunting. Furthermore, crows recognise individual human faces and remember those who have threatened them for years. In one study, researchers wearing a mask captured and released crows; thereafter, even when wearing different clothes, the masked individuals were consistently scolded by crows, and the alarm calls spread to other crows that had not directly experienced the capture. This indicates not only long-term memory but also social transmission of information.

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Simulated IELTS Reading Passage (Academic)

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