| 11. | The trill has a retroflex flap allophone occurring in intervocalic position.
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| 12. | The song is a varying series of high thin rapid trills.
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| 13. | Everything must be right, from the very first trill ".
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| 14. | The begging call of juveniles is a high-pitched trill.
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| 15. | Jackson said plainly, her voice slipping briefly into a fragile trill.
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| 16. | Varone matches the trills and high notes of the vocalizing with ingenuity.
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| 17. | Now we're surrounded by dozens of cheap trills.
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| 18. | Offered a ride, Big Bird trills : " No thanks.
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| 19. | When songbirds chirp, trill and warble, we call it singing.
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| 20. | Peaceful, except for the chronic trill of his shiny blue BlackBerry.
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