Life on Earth
9.10/10
1979-04-10
55 menit.
HD
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
Tahun: 1979
Studio: BBC Two
Negara: United Kingdom
Partner
Life on Earth
Serupa
