Correlations between head movements and locomotor speed.

Pearson regression coefficient between total GPS logger movement (measured by head movements) and average locomotor speed (Dalt in km/h, eq.3) for 2 h epochs were performed to assess correlation coefficients in 10 Canadian deer. To avoid autocorrelation effects due to sequential interdependency in these time series, we randomly selected 20% of the data for the calculations (on average resulting in 1 data pair every 10 h). Square root transformations on both variables were performed to reach normal distributions. Correlations between head movements and locomotor speed.