Reading Answers Extra Quality - The Intelligence Of Corvids Ielts

Some corvids can use one tool to obtain another tool to finally reach food, demonstrating multi-step problem solving. 2. Social Intelligence and Self-Awareness

One landmark study by researchers at the University of Cambridge involved rooks ( Corvus frugilegus ) and the "water displacement" task, a challenge inspired by Aesop’s fable 'The Crow and the Pitcher.' The rooks were presented with a narrow tube of water containing a floating worm. Without training, the birds dropped stones into the tube to raise the water level. Crucially, they preferred large stones over small ones and avoided dropping stones into sand-filled tubes, demonstrating an understanding of cause-and-effect and volume displacement. Some corvids can use one tool to obtain

To conceal their identity and see if crows recognized specific faces later. What happened when masks were removed? The crows stopped harassing the researchers. What is unique about the padanus probe? They follow a standard design , almost like a set of instructions. 💡 IELTS Reading Tips for this Passage Look for Proper Nouns: Without training, the birds dropped stones into the

The text details that the jays tracked how long ago they hid food. If a long time passed, they left decayed worms and chose nuts, proving they track time elapsed. 4. B (Western Scrub-Jay) What happened when masks were removed

Why did Mei receive the muddy notebook again with a note? A. To ask for payment B. To warn her to stop the experiments C. As a sign that the crows (or someone observing them) were acknowledging the partnership D. To return it because it belonged to the library Answer: C