How to follow tracked Geese

On several sites of western Europe we caught Greylags and equiped them with GPS-transmitters which you can follow in the web. Click on the links to different sites:

Geese from Großen Meer (Ostfriesland, Niedersachsen, Germany)
Geese from Dümmer (Niedersachsen, Germany)
Geese from the Leineaue (Niedersachsen, Germany
Geese from the Provinz Groningen (The Netherlands)
Geese from Sweden, Norway and Lithunia.