Do Siskins have friends? An analysis of movements of Siskins in groups based on EURING recoveries

Capsule We analysed ring recovery data of Siskins from the EURING database (N = 42,707 individuals) and found 18 groups of birds that moved together a median distance of 200 km (range 51–1296 km). The median time elapsed between capture and recovery was 21 days (range 4–1390 days). These data suggest that Siskins have stable social bonds and move in stable social units.