
The clever way the tiniest bird warms her nest
Clip: Season 37 Episode 12 | 1m 40sVideo has Closed Captions
This bird may not be big enough to cover all her eggs, but she can still keep them warm.
This little goldcrest may not be big enough to cover all her eggs, but thanks to a unique technique she can still keep them warm. The secret to her success can only be revealed through thermal cameras and has been caught on film for the very first time.
Major support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, The Fairweather Foundation, Sue and Edgar Wachenheim III, Charles Rosenblum, Kathy Chiao and...

The clever way the tiniest bird warms her nest
Clip: Season 37 Episode 12 | 1m 40sVideo has Closed Captions
This little goldcrest may not be big enough to cover all her eggs, but thanks to a unique technique she can still keep them warm. The secret to her success can only be revealed through thermal cameras and has been caught on film for the very first time.
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Learn Moreabout PBS online sponsorshipThe Egg: Life’s Perfect Invention Preview
Video has Closed Captions
Join Sir David Attenborough to reveal the incredible egg, piece by piece. (35s)
Video has Closed Captions
See the remarkable way hatchlings are able to break out of their eggs. (1m 45s)
Providing Support for PBS.org
Learn Moreabout PBS online sponsorshipMajor support for NATURE is provided by The Arnhold Family in memory of Henry and Clarisse Arnhold, The Fairweather Foundation, Sue and Edgar Wachenheim III, Charles Rosenblum, Kathy Chiao and...