Bird migration
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Presents many kinds of birds and describes the various journeys they make to their summer and winter homes, showing their course of flight and the distance traveled. Examines possible reasons for migration and discusses the "Ice Age" theory of bird migration. Includes bird calls.
Complete catalog record
Sources
- 16mm Filmography (legacy record) — title, year, creator, format, description, catalog record
Original permalink · Record added 2024-04-20 15:58:23