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原文連結
論文資訊
- 類型：已發表論文
- 日期：2023-04-21
摘要
城市 areas often impose strong, novel selection pressures on wildlife. Phenotypic plasticity, including behavioural plasticity, is an important mechanism helping organisms establish 族群s in novel environments. Behavioural plasticity can be difficult to study in 城市 wildlife because many 城市 environmental variables are challenging to isolate and manipulate experimentally. We took advantage of the COVID-19 lockdowns to assess whether 城市 birds expressed territorial aggression differently when relieved from frequent encounters with humans. We used simulated territorial intrusions to measure the behavioural responses of resident dark-eyed juncos, Junco hyemalis, on an 城市 college campus in Los Angeles, U.S.A. We found that the 族群 overall displayed significantly reduced movement and singing behaviour
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