| 21. | The barn owl has acute hearing, with ears placed asymmetrically.
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| 22. | Barn owls are white with buff, yellow and tawny shadings.
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| 23. | She told me about the barn owls that hissed at her from the palms.
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| 24. | The most prevalent North American species is the common barn owl, Tyto alba pratincola.
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| 25. | Knudsen had used barn owls for earlier research on how the brain processes sound.
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| 26. | Barn owls are medium to large owls with large heads and characteristic heart-shaped faces.
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| 27. | The king snake and the barn owl are natural predators.
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| 28. | In many areas, the installation of nesting boxes has helped revive barn owl populations.
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| 29. | Victims include wood ducks, purple martins, bluebirds and barn owls.
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| 30. | Barn owls are hosts to a wide range of parasites.
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