...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ethology >Distance from Water, Sex and Approach Direction Influence Flight Distances Among Habituated Black Swans
【24h】

Distance from Water, Sex and Approach Direction Influence Flight Distances Among Habituated Black Swans

机译：离水的距离，性别和进近方向会影响栖息的黑天鹅之间的飞行距离

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 many animals, response to predators occurs at greater distances the further an individual is from a refuge, but this has rarely been investigated in birds. Here, we test the hypothesis that the further from refuge (i.e. water) a foraging black swan Cygnus atratus is situated, the longer its flight initiation distance (FID) in response to a pedestrian approach on land. As predicted, swans situated farther from water exhibited longer FIDs compared with those closer to the shore. In addition, there was the possibility of an interesting interaction effect (p<0.061) of sex and direction of approach on FID. Whilst males tended to not alter their response in relation to the angle of approach relative to the water, females tended to respond at longer distances, when approached from the shore than when approached from the land or parallel to the shore. This is one of the first reports of sex differences in FIDs for birds, with sex differences only manifesting themselves under certain approach types. Group size, the order of repeated approaches, and time of day did not influence responses, although starting distance of approach was positively related to FID.
机译：在许多动物中，对捕食者的反应发生的距离越远，个体离避难所越远，但这在鸟类中很少得到研究。在这里，我们测试了一个假设，即觅食的黑天鹅天鹅座距避难所（即水）越远，它对陆上行人进近的响应距离（FID）越长。正如预测的那样，与离岸较近的天鹅相比，离水更远的天鹅的FID更长。此外，性别和进近方向对FID可能产生有趣的交互作用（p <0.061）。尽管雄性趋于不改变相对于水面的接近角的响应，但雌性趋向于从岸上接近时比从陆地或平行于岸上时更长的响应。这是鸟类FID中性别差异的第一份报告之一，性别差异仅在某些进场类型下才表现出来。小组人数，重复进场的顺序和一天中的时间不会影响响应，尽管进场的起始距离与FID呈正相关。

著录项

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