Information and IdeasEasy–MediumStated detail about a bird's tool use
Information and Ideas practice question
New Caledonian crows shape hooked tools from twigs, stripping the bark and leaving a small hook at one end that they use to pull grubs from crevices. Young crows take about a year to learn the technique, apparently by watching their parents.
According to the text, how do young crows learn to make hooked tools?
- A. By watching their parentsCorrect
- B. By trial and error alone
- C. By instinct, without any learning
- D. By being taught by unrelated adults
Answer: A. By watching their parents
The second sentence: 'apparently by watching their parents'.
Why the other answers are wrong
- B. By trial and error alone
- Watching, not unaided trial.
- C. By instinct, without any learning
- The text says it takes a year to learn.
- D. By being taught by unrelated adults
- Parents, not unrelated adults.
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