Life on Earth - Season 1 Episode 8 الحلقة 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
- النوع: Documentary
- ستوديو: BBC Two
- الكلمة الرئيسية: earth, natural history, biology, ecology, animals, nature, evolution, natural selection, nature documentary
- المصبوب: David Attenborough
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