Department of Evolutionary Ecology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany.
Museum of Natural History Berlin, Leibniz Institute for Evolutionary and Biodiversity Research, Berlin, Germany.
Glob Chang Biol. 2021 Nov;27(21):5460-5468. doi: 10.1111/gcb.15794. Epub 2021 Aug 16.
Billions of birds migrate from the Palaearctic to sub-Saharan Africa, yet we are unaware about where exactly they stay over winter and how consistent they have been using these wintering areas over historical times. Here, we inferred the historical wintering areas of Eurasian Golden Orioles (Oriolus oriolus) from stable isotope ratios of feathers. Over the past 200 years, Golden Orioles used two major wintering grounds. Between 1895 and 1971, the relative use of these areas depended on local rainfall intensities. Golden Orioles may depend strongly on humid wintering areas in sub-Saharan Africa, which may put this species at stake when the global climate continues to change.
数十亿只鸟类从古北区迁徙到撒哈拉以南非洲，但我们不知道它们究竟在哪里过冬，以及在历史上它们使用这些越冬地的频率是否一致。在这里，我们通过羽毛的稳定同位素比值来推断欧亚金莺（Oriolus oriolus）的历史越冬地。在过去的 200 年里，金莺使用了两个主要的越冬地。1895 年至 1971 年期间，这些地区的相对使用情况取决于当地的降雨量强度。金莺可能强烈依赖于撒哈拉以南非洲湿润的越冬地，而当全球气候继续变化时，这可能会使该物种面临风险。
