Figure 1. Example day's speed and track for an African wild dog.

(a) GPS data trace for one individual, dog position at the beginning of the day (0/0), GPS position colour coded based on speed bins, black arrow shows the direction of the movement, inset shows range covered by dogs during 5 months of observation and trace of example day. (b) Speed profile at local time for one individual colour coded based on speed bins (legend in a). (a,b) Movement is interspersed by six fast chases (circles 1–5 and 7). The GPS sample rate varies throughout the day and is set to capture high-resolution data when the animal is moving. When the animal is stationary, the sampling interval is once an hour (circles 6 and 9). Between 18:00 and 20:00, it is at 10-s intervals (when moving, circle 8), when high-speed chases are detected, it is increased to 5 Hz (circles 1–5 and 7). At all other times, it is once every 5 min when moving.