Figure 1: The extent of seabird migrations and the biologging data
available. 1a) The migration of the sooty shearwater, the longest
migration of any species (Figure taken from 2). 1b) The migration and
sabbatical year behaviour of a wandering albatross, which
circumnavigates the globe twice (Figure taken from ,36). 1c) The global
seabird tracking database, containing over 5 million data points
(Birdlife.org,
Seabirdtracking.org).