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Magical Appearances
Episode 6 of 10
Where do swallows hibernate and where do butterflies appear from in spring? The mystery of where some animals disappear to each year puzzled early naturalists.
Sir David Attenborough examines the mysteries behind some of nature's most fascinating creatures and plants.
The mystery of where some animals disappear to each year puzzled early naturalists. Do swallows hibernate in mud or under water? Where do our butterflies suddenly appear from each spring? The discovery of the swallow's epic migration and the butterfly's magical transformation were scientific stories cloaked in mystery and controversy.
Last on
Sat 23 Jun 201806:15
