To catch a migrating bird
The individual marking of a bird via a ring is one of the most efficient ways of studying and preserving bird life. Introduced in Denmark in 1889, the technique rapidly spread around the world. (Luigi Jorio and Rolf Amiet, swissinfo.ch)
The Swiss ringing station on the Col de Bretolet mountain pass in canton Valais specialises in watching birds during the autumn migration.
You can find an overview of ongoing debates with our journalists here . Please join us!
If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at english@swissinfo.ch.