Secret Migrations

The Eleonora's falcon migrates thousands of miles in a journey that triggers puzzles which scientists are still trying to understand.

Scientists try to track the migration of Europe's widely distributed Nathusius' pipistrelle bats.

Following Eurasian blackcap warblers as they migrate from colder climates deep into Africa.

Scientists use state-of-the-art technology to track the mysterious migration of painted lady butterflies.