COVID-19封锁对随意拾荒者的食策略的影响
Benedetta Catitti1, Ying-Chi Chan2, Damien R Farine3,4,5
1Swiss Ornithological Institute, Sempach, Switzerland.
Biology letters
|October 28, 2025
概括
在COVID-19封锁期间,红风 (Milvus milvus) 减少了在道路上搜寻垃圾的数量. 他们转向人类的食物来源,显示出快速的行为适应环境变化.
科学领域:
- 生态学和行为生态学.
- 野生动物对人为变化的反应
- 鸟类的食行为 鸟类的食行为
背景情况:
- 人类活动显著改变了野生动物资源的可用性.
- 像红风 (Milvus milvus) 这样的清理物种通常依赖于波动的资源.
- 人类引起的资源突然变化的对食尸动物的影响还不太清楚.
研究的目的:
- 为了调查在COVID-19封锁期间减少道路杀戮的可用性如何影响红风的食行为.
- 为了测试红风会减少道路使用的假设,当尸体稀缺时,寻找杂物.
- 评估红风对人类引起的环境变化的长期行为适应.
主要方法:
- 利用了199只不繁殖的红风的GPS跟踪数据.
- 在封锁前 (2017-2019),封锁 (2020) 和封锁后 (2021-2023) 期间,比较食行为 (道路使用,人为食区的选择).
- 分析了息地选择的变化,以应对道路杀戮可用性的变化.
主要成果:
- 红风从锁定前积极选择道路转移到锁定期间避免它们.
- 封锁后,避开道路的行为在一定程度上继续存在,而封锁前的趋势发生了逆转.
- 在封锁期间和之后,观察到对人为养概率较高的地区的选择增加.
结论:
- 人类活动的突然变化,以COVID-19封锁为例,可以诱导一般鸟类食尸动物的快速行为可塑性.
- 红风在食战略上表现出显著的转变,远离公路,转向人类食品补贴.
- 观察到的行为变化,特别是对人为食物来源的依赖增加,显示出超过最初的封锁期的持久影响.
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