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首页> 外文期刊>The wilson journal of ornithology >VOCAL REPERTOIRE AND SIGNAL CHARACTERISTICS OF 'ALALĀ, THE HAWAIIAN CROW (CORVUS HAWAIIENSIS)
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VOCAL REPERTOIRE AND SIGNAL CHARACTERISTICS OF 'ALALĀ, THE HAWAIIAN CROW (CORVUS HAWAIIENSIS)

机译：夏威夷乌鸦“ ALAL”的语音曲目和信号特征

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摘要

The critically endangered Hawaiian Crow or 'Alalā (Corvus hawaiiensis) is currently extinct in the wild and the remaining 115 individuals are being captively managed on Hawai'i and Maui Islands by the Zoological Society of San Diego. Here we provide the first comprehensive analysis of the vocal repertoire of this species. We documented the vocal repertoire of three male-female pairs of 'Alalā during the 2012 breeding season at the Keauhou Bird Conservation Center (KBCC) on Hawai'i Island. Vocalizations were recorded using an automated acoustic recorder placed outside each of three aviaries housing each pair of Alalā. A total of 44 hours of recordings were analyzed to describe the structure of vocalizations, call characteristics, and vocal repertoire of this species. We identified 24 different call type categories with fundamental frequencies between 500 Hz--2 kHz. Variation within each call type was observed, as well as variation of similar call types among 'Alalā breeding pairs. Many calls contained a variety of nonlinear dynamical states, including deterministic chaos, frequency jumps, bifurcation, and varying harmonics and subharmonics. These findings provide important baseline information on 'Alalā vocal behavior that may assist future efforts to release these birds back into the wild.
机译：极度濒临灭绝的夏威夷乌鸦或“阿拉拉”（Corvus hawaiiensis）目前已在野外灭绝，其余115只个体正由圣地亚哥动物园协会在夏威夷和毛伊岛上人工饲养。在这里，我们提供了该物种的声乐库的第一个综合分析。我们在夏威夷岛的Keauhou鸟类保护中心（KBCC）记录了2012年繁殖季节三对雌雄'Alalā'的声乐谱。使用放置在每对阿拉拉的三个鸟舍中每个鸟舍外面的自动声学记录器记录人声。总共进行了44个小时的录音分析，以描述该物种的发声结构，通话特征和声音库。我们确定了24种不同的呼叫类型类别，其基本频率在500 Hz--2 kHz之间。观察到每种候补类型之间的差异，以及'阿拉阿拉（Alaā）育种对之间相似的催收类型的差异。许多调用包含各种非线性动力学状态，包括确定性混沌，跳频，分叉以及变化的谐波和次谐波。这些发现提供了有关“阿拉拉”声音行为的重要基准信息，这些信息可能有助于将来将这些鸟放回野外的努力。

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  • 来源
    《The wilson journal of ornithology》 |2017年第1期|25-35|共11页
  • 作者

    ANN M. TANIMOTO; PATRICK J. HART; ADAM A. PACK; RICHARD SWITZER;

  • 作者单位

    Department of Biology, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA. Listening Observatory for Hawaiian Ecosystems (LOHE) Bioacoustics Laboratory, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA.;

    Department of Biology, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA. Listening Observatory for Hawaiian Ecosystems (LOHE) Bioacoustics Laboratory, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA.;

    Department of Biology, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA. Departments of Psychology, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA. Listening Observatory for Hawaiian Ecosystems (LOHE) Bioacoustics Laboratory, University of Hawai'i at Hilo, 200 W. Kāwili Street, Hilo, HI 96720 USA.;

    Zoological Society of San Diego, 2920 Zoo Drive, San Diego, CA 92101 USA.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bioacoustics; breeding season; captivity; corvid; Hawai'i; vocalizations;

    机译：生物声学繁殖季节;囚禁;弯曲夏威夷发声;

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