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NatureThe Egg: Life’s Perfect Invention
How an Egg Hatches
See the remarkable way hatchlings are able to break out of their eggs.
Clip: S37 Ep12 | 1m 45s
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The clever way the tiniest bird warms her nest
This bird may not be big enough to cover all her eggs, but she can still keep them warm.
Clip: S37 Ep12 | 1m 40s
The Egg: Life’s Perfect Invention Preview
Join Sir David Attenborough to reveal the incredible egg, piece by piece.
Preview: S37 Ep12 | 35s
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