It’s the Season for Tundra Swans.

Avian migration exhibits a planetary ebb and flow like that of an ocean tide—a pull across the latitudes exerted on whole populations of birds. Throngs of shorebirds and waterbirds come surging into our region from the Arctic north every autumn—they ride the frozen edge of winter south to California’s Central Valley.

https://baynature.org/article/time-tundra-swans/

Posted on 03 de janeiro de 2018, 12:06 AM by biohexx1 biohexx1

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