Dr. Andreas sat by the window, watching a crow drop a walnut onto the pavement. It wasn't an accident; it was a calculated move. The crow waited for a car to run over the shell, then swooped down to collect the meat. This simple observation opened the door to one of the most fascinating topics in zoology: the intelligence of corvids.
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." the intelligence of corvids ielts reading answers
| Statement | Answer | |-----------|--------| | Corvids have been observed using tools in the wild. | | | Corvids’ brain-to-body ratio is larger than that of great apes. | Not Given (sometimes texts say similar to apes, but not necessarily larger) | | New Caledonian crows can bend wires to hook food. | True | | All corvid species show the same level of intelligence. | False | | Corvids can recognize themselves in a mirror. | True (in some studies with magpies) | | Their intelligence is entirely instinctive, not learned. | False | The crow waited for a car to run
5. Ravens will sometimes pretend to hide food to mislead other birds. 6. The brain of a crow contains more neurons than the brain of a chimpanzee. 7. Corvids are the only non-human animals known to engage in tactical deception. Nathan Emery stood before the aviary, a stopwatch
One of the most famous experiments involved . In a laboratory setting, Betty was presented with a straight piece of wire and a tube containing food. The wire was useless as it was. To the researchers' amazement, Betty did not just peck at the tube; she used her beak to bend the wire into a hook , allowing her to pull the bucket of food up.
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 .
