16Hit1600
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?

  1. A. By watching their parentsCorrect
  2. B. By trial and error alone
  3. C. By instinct, without any learning
  4. 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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