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Fig. 2. Respirometry trace (A) and stomach temperature (B) of a European shag
during a dive trial (post-absorptive). Arrows indicate when the bird entered
and left the respirometry set-up. The trial lasted 32 min in water of
10.1°C. Note, the trace in A does not represent instantaneous metabolic
rate but gives an indication of metabolic rate during a dive trial. See
Materials and methods for details on how diving metabolic rate was
calculated.