The Intelligence Of Corvids Ielts Reading Answers Guide

"In the Aesop's Fable experiment, rooks demonstrated understanding of __________ by choosing heavy stones."

| Statement | Answer | |-----------|--------| | Corvids have been observed using tools in the wild. | True | | 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 intelligence of corvids ielts reading answers

Unlike simple trial-and-error learning, corvids demonstrate an understanding of physical causality. In the classic "Aesop's Fable" experiment, rooks dropped stones into a water-filled tube to raise the water level and reach a floating worm. They preferentially chose large, sinking stones over small, floating objects—showing they understood volume displacement before testing. Unlike simple trial-and-error learning