Bird brain
Subtitle: the mystery of bird navigation. (Film)
Contributors: Edwards, Tony.; British Broadcasting Corporation. Television Service.
Series: Horizon
Publisher: BBC [TV]
Published: 1974
Place of publication: [s.l.]
Language: eng
Number of pages: 50
Subjects: Birds -- Migration.
Other titles: Mystery of bird navigation. (Film)
Description: For centuries man has wondered how birds managed to find their way over vast distances. In the past 25 yr., scientists have begun to investigate the problem - migratory birds have internal barometers which enable them to predict weather patterns and wind direction. Birds use the sun as a compass, stars to guide them at night. Birds are even able to detect the magnetic fields of the earth. The investigations and methods used to discover these findings are also described in this film.-
Notes: producer/writer, Tony Edwards; narrator, Paul Vaughn.-

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