Table 1.

Summary statistics for tracking by seabird species. (Values represent mean ± s.d. For full methods and description of winter period, see the electronic supplementary material.)

speciesN% visiting CCLMEwinter period (days)no. locationslocations in CCLMEproportion in CCLME
lesser black-backed gull771.4208.4 ± 27.4151.1 ± 20.821.0 ± 24.00.09 ± 0.10
northern gannet3458.893.6 ± 13.489.6 ± 15.425.7 ± 29.80.26 ± 0.29
great skua16259291.9 ± 0.411.1 ± 21.80.12 ± 0.24
Cory's shearwater1957.9133.9 ± 29.9131.5 ± 27.413.8 ± 23.20.10 ± 0.18
Scopoli's shearwater9100104.5 ± 40.8102.3 ± 39.635.4 ± 36.90.35 ± 0.28
Sabine's gull7100287.9 ± 12.7228.6 ± 18.622.3 ± 3.10.08 ± 0.01
south polar skua19100237.2 ± 35.1176.3 ± 21.68.7 ± 14.30.04 ± 0.07
common tern12100254.3 ± 67.0181.3 ± 64.062.8 ± 51.80.24 ± 0.22