Fig. 4

Body motion and geographic mobility of pink-footed geese during different annual cycle stages (May–July). Per goose, the daily median of the overall dynamic body acceleration (ODBA) was plotted against the daily standard deviation of latitude, both transformed by taking the natural logarithm. Nesting was characterised by days with low body motion and low geographic mobility. Exact cut-off values for the classification of nesting days were determined with Recursive Partitioning and Regression Trees, based on GPS data only (red dotted line) or GPS and accelerometer data combined (green dashed line). a Depicts females that nested (n  =  29 tracks), while b depict non-breeding females (n  =  25 tracks). The nesting period was defined based on nest attendance patterns (see Fig. 5). For the other periods, see text