Ducks’ Corkscrew Anatomy
16:03–16:31 · 27s
Spencer breaks down why only 3% of birds have penises and how a sexual arms race led to ducks’ famous corkscrew shape.
16:03–16:31 · 27s
Spencer breaks down why only 3% of birds have penises and how a sexual arms race led to ducks’ famous corkscrew shape.
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