| 11. | The vocalization is sometimes confused with that of the horned lark.
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| 12. | These long distance vocalizations can be up to a kilometer away.
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| 13. | Kittens need vocalization early on in order to develop communication properly.
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| 14. | It lacks a vocalizations are limited to grunts or low hisses.
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| 15. | :Spasmodic dysphonia can inhibit certain vocalizations while not affecting others.
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| 16. | Nonetheless, in some species both sexes can produces these vocalizations.
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| 17. | Vocalizations that are made prior to copulation are named mating calls.
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| 18. | It is also possible that some vocalizations are due to hyperventilation.
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| 19. | Vocalizations consist of alternating series of ascending whistles and short notes.
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| 20. | They are the best tools yet for learning bird vocalizations.
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