Fig 2. Classifying small-scale migrations.

a) A movement trajectory and b) Net Squared Displacement (NSD) plot for an individual moose migrating a short distance. The coloured lines represent the movement over time, for both the xy path (a) and the NSD (b), whilst the red line indicates the MSD averaged over 30 time steps. It is evident from the deviations of the movement trajectory from the MSD, that for small-scale migrations, it is difficult to discriminate daily movements from migratory movements as these may operate over similar spatial scales. The MSD helps smooth the daily movements, thus improving the model fitting process, however, there is no easily identifiable summer range in comparison to Fig 1. c) Best Concordance Criterion (CC) value fitted against asymptote (scale of movement in kilometres) for moose classified as migratory (n = 299). Blue points indicate moose that were confirmed as migratory (n = 226) whereas red points indicate moose that had been misclassified as migratory (n = 73), as they were in fact non-migratory following visual inspection. The misclassified individuals had smaller scales of movement, and generally lower CC values. In addition, moose migrating at smaller scales (<10km) generally had poorer model fits in comparison to moose migrating at larger scales (>10km).