Fig. 1.
Fluctuations of metabolic rate in terrestrial vertebrates. (A) Conditional probability density function p(r|v) of the growth rates r in three lizard species. (B) Conditional probability density function p(r|v) of the growth rates r in five bird species. (C) Conditional probability density function p(r|v) of the growth rates r in four small mammal species. For all three figures, the solid lines are fits to Eq. 1, using the mean 〈r〉 and standard deviation σr(v) calculated for the data from each species.