How birds sleep
"Every night, birds all over the world settle down for a good night's sleep. But how on earth do they do it? Some are rocked to sleep on the surface of choppy seas. Others nap high in the air, gliding on warm air currents. Still other doze off standing up--on one leg. Take a journey a...
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| Format: | BOOK |
| Language: | ENGLISH |
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mineditionUS
2023
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