...
首页> 外文期刊>The wilson journal of ornithology >Observation of Sandhill Cranes' (Grus canadensis) Flight Behavior in Heavy Fog
【24h】

Observation of Sandhill Cranes' (Grus canadensis) Flight Behavior in Heavy Fog

机译:沙丘鹤在大雾中的飞行行为观察

获取原文
获取原文并翻译 | 示例
           

摘要

The behaviors of birds flying in low visibility conditions remain poorly understood. We had the opportunity to monitor Sandhill Cranes (Grus canadensis) flying in heavy fog with very low visibility during a comprehensive landscape use study of refuging cranes in the Horicon Marsh in southeastern Wisconsin. As part of the study, we recorded flight patterns of cranes with a portable marine radar at various locations and times of day, and visually counted cranes as they departed the roost in the morning. We compared flight patterns during a fog event with those recorded during clear conditions. In good visibility, cranes usually departed the night roost shortly after sunrise and flew in relatively straight paths toward foraging areas. In fog, cranes departed the roost later in the day, did not venture far from the roost, engaged in significantly more circling flight, and returned to the roost site rather than proceeding to foraging areas. We also noted that compared to. mornings with good visibility, cranes flying in fog called more frequently than usual. The only time in this 2-year study that observers heard young of the year calling was during the fog event. The observed behavior of cranes circling and lingering in an area while flying in poor visibility conditions suggests that such situations may increase chances of colliding with natural or anthropogenic obstacles in the vicinity.
机译:在低能见度条件下飞行的鸟类的行为仍然知之甚少。在威斯康星州东南部Horicon沼泽进行的一次加油起重机的综合景观研究中,我们有机会监视了在非常低的能见度下在大雾中飞翔的Sandhill起重机(Grus canadensis)。作为研究的一部分,我们用便携式船用雷达记录了起重机在一天中不同位置和一天的飞行模式,并在早晨离开栖息地时目视计数了起重机。我们将雾事件期间的飞行模式与晴朗条件下记录的飞行模式进行了比较。由于能见度高,起重机通常在日出后不久就离开夜栖场所,并以相对笔直的路径飞向觅食区。在大雾中,起重机于当天晚些时候离开栖息地,没有冒险离开栖息地,进行了更多的盘旋飞行,然后返回栖息地,而不是前往觅食区。我们还注意到相比。在能见度较高的早晨,起重机在雾中飞行的频率比平常高。在这项为期2年的研究中,观察员唯一听到这一年年轻人叫声的时间是在大雾天气。观察到的起重机在较差的能见度条件下飞行时在某个区域盘旋和徘徊的行为表明,这种情况可能会增加与附近自然或人为障碍物碰撞的机会。

著录项

  • 来源
    《The wilson journal of ornithology》 |2015年第2期|281-288|共8页
  • 作者单位

    U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, WI 54603, USA;

    U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, WI 54603, USA;

    U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Rd., La Crosse, WI 54603, USA;

    Department of Biological Sciences, Johnson Science Tower (JST), 720 118 College Drive, University of Southern Mississippi, Hattiesburg, MS, 39406, USA,U.S. Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, MT, 59715 USA;

    U.S. Fish and Wildlife Service, Leopold Wetland Management District, W10040 Cascade Mountain Road, Portage, WI, 53901, USA;

    U. S. Fish and Wildlife Service, Horicon National Wildlife Refuge, W4279 Headquarters Road, Mayville, WI, 53050, USA,U.S. Fish and Wildlife Service, Upper Mississippi River National Wildlife and Fish Refuge, N5727 County Road Z, Onalaska, WI, 54650, USA;

    U. S. Fish and Wildlife Service, Horicon National Wildlife Refuge, W4279 Headquarters Road, Mayville, WI, 53050, USA;

    U.S. Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, MT, 59715 USA,Computer Science Department, 357 EPS Building, Montana State University, Bozeman, MT, USA;

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

    Grus canadensis; Horicon National Wildlife Refuge; low visibility; marine radar;

    机译:加拿大花Horicon国家野生动物保护区;可见度低;船用雷达;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号