Duck do do5/9/2023 Meanwhile, ducks in the center of the flock would go fully to sleep, closing both eyes. Interestingly, the researchers from Indiana State University who initially discovered this phenomenon, noted that half-napping ducks positioned on the outside of a group would keep their outside eye open and the eye facing towards the group of ducks closed. When a flock of ducks are together, that means every duck can take half-brain naps and keep one eye open looking for trouble.
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