JEB -- Speakman 208 (9): 1717 Figure IG4

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Fig. 4. Log_e(daily energy expenditure in kJ day^-1) measured using the doubly-labelled water (DLW) technique for free-living animals as a function of log_eM_b (in g) for (A) 73 small mammals and (B) 90 birds. See text for statistics.