Figure 4. Locations of the centre of preferred ocean foraging zones for individual wandering albatrosses.

Positions refer to different age and sex classes tracked by satellite telemetry during the migration from the breeding sites at Crozet Islands. Filled circles: juvenile females, open circles: adult females, filled triangles: juvenile males, open triangles: adult males. The grey triangle refers to an adult of unknown sex. Mean longitudes for each age category (JF: juvenile females, AF: adult females, JM: juvenile males, AM: adult males) are indicated by arrows. The starting point located at the Crozet Island is indicated by a star and the Sub-Tropical and Sub-Antarctic Fronts located around the Antarctic continent are indicated by light grey and dark grey lines, respectively.