...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ostrich >Movements by birds in Acacia savanna in southeast Botswana
【24h】

Movements by birds in Acacia savanna in southeast Botswana

机译：博茨瓦纳东南部相思大草原的鸟类迁徙

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In Botswana where rainfall is unpredictable and often highly localised, this results in resources being patchy. Many bird species are therefore nomadic to some degree. Movements of many, even common, species are, however, very poorly understood. This paper looks at patterns of movement in six species in mixed Acacia savanna at Ruretse in southeast Botswana using both transect and ringing data. Sedentary species such as Sabota Lark Mirafra sabota and Kalahari Scrub-robin Erythropygia poena typically had a high frequency of occurrence and were common on transects, but low numbers were ringed. There was some evidence for seasonality in occurrence for Namaqua Dove Oena capensis, Marico Sunbird Nectarinia mariquensis and Green-winged Pytilia Pytilia melba. One species showed erratic movements, apparently in response to rainfall,whilst two species clearly showed nomadic behaviour.
机译：在博茨瓦纳，那里的降雨是不可预测的，而且经常高度局限，导致资源稀疏。因此，许多鸟类在某种程度上是游牧的。然而，人们对许多甚至常见物种的运动知之甚少。本文利用横断面和环形数据研究了博茨瓦纳东南部鲁雷特塞的混合金合欢热带稀树草原中六个物种的运动模式。久坐的物种，如Sabota Lark Mirafra sabota和Kalahari Scrub-robin Erythropygia poena，通常发生频率高，在样带上很常见，但数量较少。有证据表明，纳马夸鸽子瓦纳海角，马里科太阳鸟海藻和绿翅翼龙Pytilia melba发生季节性。一种物种表现出不稳定的运动，显然是对降雨的响应，而两种物种则明显表现出游牧的行为。

著录项

  • 来源
    《Ostrich》 |2001年第15期|共6页
  • 作者

    Tyler SJ;

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 鸟纲;
  • 关键词

    Migration;

    机译：移民;

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