The clever way the tiniest bird warms her nest
Clip: Season 37 Episode 12 | 1m 40s Video has closed captioning.
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.
Problems Playing Video? | Closed Captioning