Fig. 2

GPS tracked foraging trips classified according to time spent foraging on land and sea. a Time spent foraging on land (green) or sea (blue) or ‘other’ (gray, likely non-foraging activity). Trips are ranked in reverse order from most terrestrial to least terrestrial, with the ranking according to proportion of foraging time on land, then the proportion of the whole trip on land, then by the proportion of the whole trip at sea. Notice ‘mixed’ class trips (ca. ranks 250 – 450) with both terrestrial and marine foraging, though the majority trips include foraging exclusively on land (ca. ranks 0 – 250) or sea (ca. ranks 450–1200). 8 example trips (GPS tracks) are shown for those with >95 % foraging time on land (b), 5–95 % foraging time on land (c), and <5 % foraging time on land (d). b-d points show interpolated GPS locations (see methods), with locations colored to indicate non-foraging points (gray), sea foraging (blue), and land foraging (green); individual foraging trip trajectories are indicated by unique line colors, and land is shown (dark gray)