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Download HD Season 1 Episode
- Season 1 The Infinite Variety
- Season 1 Building Bodies
- Season 1 The First Forests
- Season 1 The Swarming Hordes
- Season 1 Conquest of the Waters
- Season 1 Invasion of the Land
- Season 1 Victors of the Dry Land
- Season 1 Lords of the Air
- Season 1 The Rise of the Mammals
- Season 1 Theme and Variations
- Season 1 The Hunters and Hunted
- Season 1 Life in the Trees
- Season 1 The Compulsive Communicators
Life on Earth - Season 1 Episode 8 Lords of the Air
9.10 55 minutes 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
