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首页> 外文期刊>Avian Conservation and Ecology >Evidence Suggesting that Ivory-billed Woodpeckers (Campephilus principalis) Exist in Florida
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Evidence Suggesting that Ivory-billed Woodpeckers (Campephilus principalis) Exist in Florida

机译：有证据表明在佛罗里达州存在象牙嘴啄木鸟（CampephilusPrincipalis）

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The Ivory-billed Woodpecker (Campephilus principalis) disappeared from the forests of southeastern North America in the early 20th Century and for more than 50 years has been widely considered extinct. On 21 May 2005, we detected a bird that we identified as an Ivory-billed Woodpecker in the mature swamp forest along the Choctawhatchee River in the panhandle of Florida. During a subsequent year of research, members of our small search team observed birds that we identified as Ivory-billed Woodpeckers on 14 occasions. We heard sounds that matched descriptions of Ivory-billed Woodpecker acoustic signals on 41 occasions. We recorded 99 putative double knocks and 210 putative kent calls. We located cavities in the size range reported for Ivory-billed Woodpeckers and larger than those of Pileated Woodpeckers (Dryocopus pileatus) that have been reported in the literature or that we measured in Alabama. We documented unique foraging signs consistent with the feeding behavior of Ivory-billed Woodpeckers. Our evidence suggests that Ivory-billed Woodpeckers may be present in the forests along the Choctawhatchee River and warrants an expanded search of this bottomland forest habitat.
机译：象牙嘴啄木鸟（CampephilusPrincipalis）在20世纪初期从北美东南部的森林中消失，并且50多年来一直被认为已灭绝。在2005年5月21日，我们在佛罗里达州黑手州乔克托卡塔奇河沿岸的成熟沼泽森林中发现了一只鸟，被鉴定为科特迪瓦啄木鸟。在随后的一年研究中，我们的小型搜索小组成员观察到了14次被我们确定为象牙嘴啄木鸟的鸟类。在41种情况下，我们听到的声音与象牙嘴啄木鸟声信号的描述相匹配。我们记录了99个推定的双敲门声和210个推定的kent叫声。我们在象牙开嘴啄木鸟所报告的大小范围内找到了比在文献中已经报道过或在阿拉巴马州测量过的空腔更大的蛀洞啄木鸟（Dryocopus Pileatus）。我们记录了与象牙嘴啄木鸟的进食行为一致的独特觅食迹象。我们的证据表明，象牙嘴啄木鸟可能存在于Choctawhatchee河沿岸的森林中，因此有必要扩大对这种底栖森林栖息地的搜索。

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