Fig. 6. Warming time of cold food in an albatross' stomach. Shown here are stomach temperature excursions for a wandering albatross D. exulans over a 6 day foraging trip in the Southern Ocean, which reflect the influence of sea surface temperature (SST) and meal mass on stomach temperature and meal warming time. On days 1, late 6 and 7, meals were taken in cold water south of the subtropical convergence (STC). On days 2–5, meals were taken from warmer water north of the STC. [Reproduced from Weimerskirch and Wilson (Weimerskirch and Wilson, 1992), by permission from Inter-Research Center, publisher of Marine Ecology Progress Series.]