What Counts As A Bird
5:09–5:54 · 45s
Brusatte draws a clear line on bird definitions—feathered wings capable of powered flight or descended from fliers—then crowns Archaeopteryx the oldest known bird.
5:09–5:54 · 45s
Brusatte draws a clear line on bird definitions—feathered wings capable of powered flight or descended from fliers—then crowns Archaeopteryx the oldest known bird.
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