David Attenborough's Natural Curiosities - Season 2 - Eps 10: Magical Appearances
"Magical Appearances" explores how swallows magically appear each spring and asks how did complex and beautiful insects like butterflies suddenly arrive in the summer. The discovery of the swallow’s epic migration and the revelation that butterflies could metamorphose into totally different looking adults were scientific stories both cloaked in mystery and controversy.
About David Attenborough's Natural Curiosities

Title: David Attenborough's Natural Curiosities
First Air Date: 2013-01-29
Last Air Date: 2017-06-25
Status: Ended
Rating: 7.156/10 (from 16 votes)
Language: EN
Seasons: 4
Total Episodes: 27
Network: Eden U&W
Genres: Documentary
Production Companies: Unknown
Synopsis
Sir David shines the spotlight on some of nature’s evolutionary anomalies and reveals how these curious animals continue to baffle and fascinate.
Cast

David Attenborough
Self - Presenter