| 11. | Yesterday when I was outside, I heard about two dozen different bird calls.
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| 12. | It contains imitations of natural sounds of insect and bird calls.
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| 13. | Bird calls and growlings of howler monkeys off in the forest.
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| 14. | Bird calls and the patter of falling water fill the pink clinic cubicle.
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| 15. | As a composer, Dillon was known for adapting bird calls into her scores.
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| 16. | It's a waste of time and, again, makes birds call-shy.
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| 17. | Among his recordings are " Like Tweet, " with songs based on bird calls.
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| 18. | He also produced bird films and recordings of bird calls.
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| 19. | Peterson reserved some of his finest writing for bird calls.
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| 20. | Dozens of species of birds call White Rock Lake home.
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