Breeding bird index

    • Breeding population development, relative to the year 2000 (shaded: standard error)
    • 174 regular breeders

    Knaus, P., H. Schmid, N. Strebel & T. Sattler (2020): The State of Birds in Switzerland 2020 online. http://www.vogelwarte.ch/state. Swiss Ornithological Institute, Sempach.