The Owl's Quiet Wing

Written by Studio AM.

Many owls hunt by listening for faint sounds, such as a mouse rustling in grass. Loud wing noise could hide those sounds. Special wings and feathers help the birds approach quietly.

Comb-like structures along the front edge of some flight feathers change how air flows over the wing. Soft feather surfaces and a flexible fringe along the trailing edge also help reduce flight noise. Airflow can produce turbulence, or irregular swirling motion. Broad wings let an owl fly slowly while staying aloft.

Owl species differ, and researchers are still studying how each feather feature affects sound. Quiet flight can help an owl hear its prey and make its approach harder for the prey to hear. The wing's shape and feather structure both matter.

Questions

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  1. Question 1 of 4

    What is the main idea of the passage?

  2. Question 2 of 4

    Why is quiet flight useful to a hunting owl?

  3. Question 3 of 4

    What does “turbulence” mean here?

  4. Question 4 of 4

    Where is the flexible fringe located?

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