The spreadsheet contains the fulmar tracking data used for the study, collected on Eynhallow (Scotland) in July 2009. The data were filtered and interpolated at a 10-minute resolution using R, as described in the paper. The data set includes: the bird and trip ID numbers, the longitude and latitude coordinates of a bird at each time step of a trip, the corresponding date and time, the step length (in degrees), the bearing (measured from 0 radians), and the closest boat's longitude, latitude and distance (in km) from the bird
