你即將離開本站

並前往https://www.nationalgeographic.com/animals/article/bird-migration-one-of-natures-wonders-heres-how-they-do-it

Bird migration is one of nature's great wonders. Here's how ...

Which birds migrate? Roughly half of the world's nearly 10,000 known bird species migrate, including several songbirds and seabirds, waterfowl ...

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