American redstart
新大陆的红尾鸲为林莺(wood-warbler),属林莺科(Parulidae)。美洲红尾鸲(Setophaga ruticilla)在加拿大到厄瓜多尔一带繁殖,在美洲的热带地区越冬;雄鸟主要呈黑色,翅和尾有红斑纹。
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“因为美洲红尾鸲每年都返回同一地区繁殖后代,所以返回时间推迟会使它们的到达时期与繁殖时期很难保持一致。” Studds说。
"Because American redstarts return to the same site to breed each year, arriving later may make it harder for them remain to remain in synch with their breeding cycle," Studds said.
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