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总结
美国科学家对加州一所大学校园及周边城市中的鸣禽进行长期观测与对比，发现COVID-19疫情期间的封锁与人类活动骤减，可能与鸟类喙部形态出现可测变化相关。研究推测，人流减少、餐饮垃圾与人工投喂下降等因素改变了食物来源与取食方式，进而在短时间内产生自然选择压力或触发表型可塑性，呈现“快速适应/快速进化”的迹象。该结果为理解城市生态系统在突发公共卫生事件下的连锁反应与野生动物管理提供线索。
正文
The pandemic may have caused a songbird's beak to change shape, scientists find CNN COVID lockdowns changed the beak shape of these city birds New Atlas Birds at a college changed beak shapes during the pandemic. It might be a case of rapid evolution KTVZ Rapid Evolution of Dark-Eyed Junco Beaks Observed at UCLA Campus Букви Shocker: This bird in US evolved during the COVID-19 pandemic NewsBytes
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