Some people were actually sleeping outside in the mountains.

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"The bird doesn't actually hear his song when he is sleeping, because he is not producing any sound, " said Dr Deregnaucourt.

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In the end though if only 20 tents are actually being used, or even only 20 people are sleeping onsite, then we can make the various problems go away.

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But actually making such fixes can be elusive, and Kay has used Sleeping Beauty as part of a strategy to do so more safely.

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It actually first came out in October as a gift idea -- presumably for the guy who doesn't mind sleeping on the couch.

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