美国城市的婴儿鸽较少,尽管人口稳定;原因不明。 Fewer baby pigeons seen in U.S. cities, though populations stable; cause unknown.

最近在美国主要城市进行的一项观察显示,可见的婴儿鸽明显下降,引起城市居民和野生生物专家的好奇。 A recent observation across major U.S. cities shows a noticeable decline in visible baby pigeons, sparking curiosity among urban residents and wildlife experts. 虽然成年鸽子仍然很常见,但研究人员注意到,总体人口没有显著下降,这表明幼鸟存活的时间可能更长,或者由于肥料增加或城市变化而避免公众的注意。 While adult pigeons remain common, researchers note no significant drop in overall populations, suggesting that fledglings may be surviving longer or avoiding public view due to increased predation or urban changes. 尚未确定确切原因,但正在进行的研究正在审查环境因素和城市发展的影响。 No definitive cause has been identified, but ongoing studies are examining environmental factors and urban development impacts.