Macaroni penguins are the main avian consumer of Antarctic krill in the vicinity of South Georgia.
The largest breeding colonies occur on small offshore islands to the northwest of the main island. The survey transects were positioned so as to radiate from a point close to those islands with the largest colonies. Spatial and temporal variations within the data are examined. To model the observed distribution of penguins, a theoretical at-sea distribution is developed together with a 'potential foraging footprint'. The results are compared with those from previous models based solely on the use of foraging trip duration and at-sea activity budgets.