© Mathias Schäf
Breeding bird index
- Relative evolution of the breeding population (100 = mean value; shaded: standard error)
- 176 regular breeders
- Download values as spreadsheet
Knaus P., T. Sattler, H. Schmid, N. Strebel & B. Volet (2021): The State of Birds in Switzerland 2021 online. http://www.vogelwarte.ch/state. Swiss Ornithological Institute, Sempach.