Life on Earth
Lords of the Air (1x8)
Data emisji: Mar 06, 1979
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
- Premiera: Sty 1979
- Odcinki: 13
- Obserwujący: 16
- Zakończony
- BBC Two
- Wtorek