Unlike birds who have built-in migration maps, trumpeter swans learn from their parents. Full-color photos show how scientists teach cygnets to follow ultralight aircraft to reintroduce a migrating population to the Atlantic coast.
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Unlike birds who have built-in migration maps, trumpeter swans learn from their parents. Full-color photos show how scientists teach cygnets to follow ultralight aircraft to reintroduce a migrating population to the Atlantic coast.
Read Less
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