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Figure 2


Fig. 2. Oxygen consumption rates (ml O2 min–1 kg–1) of double-crested cormorants during various activities at different temperatures (`warm' and `cold') and feeding status (`post-absorptive' and `absorptive'). Mean temperatures when resting in air were 22.1 and 8.6°C for `warm' and `cold' trials, respectively. For temperature values during all other trials, see Table 1. Oxygen consumption during resting in air (`warm') was taken as basal metabolic rate. Values are grand means ± 1 s.d., which were established from individual bird means. Values above the columns indicate the number of birds used. *Significantly different from resting (air) values. {dagger}Significantly different from respective `warm' temperature values.





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