Migrating birds require en route habitats to rest and refuel. Yet, habitat use has never been integrated with passage to understand the factors that determine where and when birds stopover during spring and autumn migration. Here, we introduce the stopover‐to‐passage ratio (SPR), the percentage of passage migrants that stop in an area, and use 8 years of data from 12 weather surveillance radars to estimate over 50% SPR during spring and autumn through the Gulf of Mexico and Atlantic coasts of the south‐eastern US, the most prominent corridor for North America’s migratory birds. During stopovers, birds concentrated close to the coast during spring and inland in forested landscapes during autumn, suggesting seasonal differences in habitat function and highlighting the vital role of stopover habitats in sustaining migratory communities. Beyond advancing understanding of migration ecology, SPR will facilitate conservation through identification of sites that are disproportionally selected for stopover by migrating birds.

中文翻译：

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降落的地方：迁徙鸟类时空栖息地的时空驱动因素

迁徙鸟类需要途中栖息地休息和加油。但是，栖息地的使用从未与通道整合在一起，以了解决定鸟类在春季和秋季迁徙期间何时何地停留的因素。在这里，我们介绍了中转停留率（SPR），在某个地区中止的通过移民的百分比，并使用来自12个天气监控雷达的8年数据，估算了整个春季和秋季整个海湾的50％SPR墨西哥和美国东南部的大西洋沿岸，是北美候鸟最突出的走廊。在中途停留期间，鸟类在春季集中在沿海附近，秋天在内陆集中在森林景观中，这表明栖息地功能的季节性差异并突出了中途停留栖息地在维持迁徙社区中的重要作用。