dung beetle rolling its ball

Dung beetles roll their excrement balls to feed their offspring. They march backwards not seeing what is in front. But they do not get lost in the way. In fact, they can follow a straight path to their home. It is known now how they achieve this fine steering. They may have their hands in the excrements but their compass is up in the skies. They get strong cues from the light
of the sun, of the moon or of the Milky Way.

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