Fig. 8From: Dead-reckoning animal movements in R: a reappraisal using Gundog.TracksGPS-corrected dead-reckoned tracks of Imperial cormorants foraging at sea: a 15 birds (blue = male, red = female). b Shows one of these tracks illustrated in 3-D. Note gaps between dives are either associated with current drift, while the bird is resting at the sea surface, or periods of flight. c and d show the descent, bottom phase and ascent of a given dive in both 2-D (c) and 3-D, respectivelyBack to article page