
1 Árstíð
13 Þáttur
Life on Earth - Season 1 Episode 8
We examine the uses and advantages of birds' unique possession - the feather. Feathers are insulators; they provide the surface of the most perfect aerofoils known - bird's wings; and they play a central role in courtship
- Ár: 1979
- Land: United Kingdom
- Genre: Documentary
- Stúdíó: BBC Two
- Lykilorð: earth, natural history, biology, ecology, animals, nature, evolution, natural selection, nature documentary
- Leikstjóri:
- Leikarar: David Attenborough