Why is fasting mandatory for penguins during their annual molt period?

Answer

They lose waterproofing and insulation

During the catastrophic molt, penguins lose their dense, oily feathers all at once, which removes their waterproofing and insulation, making entry into cold water impossible until new plumage grows.

Why is fasting mandatory for penguins during their annual molt period?

#Videos

Keeper Corner: Penguin Diet - YouTube

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