Crowley: Mating behavior

Example 1:

Rockhopper Penguins (Eudyptes chrysocome)

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These penguins are perched with their wings pointed backwards and their peaks straight up. They are screaming out a mating call, making this action a type of mating behavior.

Example 2:

African Penguins (Spheniscus demersus)

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The far penguin is bowing down to the closer penguin to show that it likes the closer penguin. This particular type of mating behavior is used in pair-bonding.