We all know penguins as those well-dressed, black-and-white birds from the icy hinterlands. Did you know that these classy (and also endangered) birds often greet one another by tapping their bills against each other's—it's called 'billing'. But as this sound effect also demonstrates, penguins sometimes greet one another with a less dignified grunt.
Download FREE Penguin Billing Sound mp3 (personal use only)
Buy full-resolution .wav (commercial license)
This sound comes from the BBC Nature Library!
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