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Audiobooks by Alison Pearce Stevens, Ph.D.
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This article is about fat dormice or "seven sleepers" animals related to squirrels. They hibernate for seven or eight months of the year slowing their breathing and heart rates to save energy.
Dr. Egevang uses a geolocator attached to the leg bands on Arctic terns to help him learn where the terns go when they migrate. His research reveals that the Arctic tern holds the record for the longest migration on Earth.
