| There is an early legend that swallows and swifts hibernated in caves or clefts in the rocks. |
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| Here they fed on bats, took to inbreeding, and hibernated for decades or even centuries at a time. |
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| In the fall of 1998, the trees were cut down while the dormice hibernated. |
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| For decades and possibly centuries, the tradition bearers idled, and the tradition itself hibernated. |
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| Aristotle however suggested that swallows and other birds hibernated. |
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