Three ducks have settled down to sleep on the shore of the pond on Pier 1 in Brooklyn Bridge Park, pictured here. They are near the left. Their heads are tucked into their back feathers. They can barely be seen. Click to enlarge the photo. Mallard ducks are famous for sleeping vigilantly; they can literally sleep with one eye open, using half of the brain. A row of sleeping ducks often has a sentry on each end, each keeping an eye out for danger. |
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