Animals fact

Some male penguins give pebbles to females they want to mate with.

The details

Gentoo and Adélie penguins build nests from stones, and good pebbles are precious. Males present pebbles to females, and the pair use them to build a nest that keeps their eggs above meltwater. Penguins also steal stones from their neighbors.

Source: Gentoo penguin (Wikipedia)

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