Episode 1

50 Mins

To Fly or Not to Fly?

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Episode 2

50 Mins

The Mastery of Flight

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Episode 3

50 Mins

The Insatiable Appetite

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Episode 4

50 Mins

Meat-Eaters

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Episode 5

50 Mins

Fishing for a Living

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Episode 6

50 Mins

Signals and Songs

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Episode 7

50 Mins

Finding Partners

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Episode 8

50 Mins

The Demands of the Egg

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Episode 9

50 Mins

The Problems of Parenthood

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Episode 10

50 Mins

The Limits of Endurance

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