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In the past two decades, our understanding of the navigational and physiological feats that enable Birds to cross immense oceans, fly above the highest mountains, or remain in unbroken flight for months at a stretch has exploded.
Bird migration entails almost unfathomable endurance, like a.
What we\'ve learned of these key migrations--how billions of Birds circumnavigate the globe, flying tens of thousands of miles between hemispheres on an annual basis--is nothing short of extraordinary.
In the past two decades, our understanding of the navigational and physiological feats that enable Birds to cross immense oceans, fly above the highest mountains, or remain in unbroken flight for months at a stretch has exploded
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