Fig. S1.
Phylogenetic distribution of various avenues to mass-independent thermal adaptation (A) [(i) hot-adapted via increases to CMIN only, (ii) hot-adapted via increasing CMIN to a greater extent than decreasing BMR, (iii) hot-adapted via decreasing BMR to a greater extent than increasing CMIN, (iv) hot-adapted via decreases to BMR only, (v) cold-adapted via increases to BMR only, (vi) cold-adapted via increasing BMR to a greater extent than decreasing CMIN, (vii) cold-adapted via decreasing CMIN to a greater extent than increasing BMR, or (viii) cold-adapted via decreases to CMIN only] across mammals (A) and birds (B). The avenue of adaptation used by each species is reflected in its position in Fig. 5 A and B. There was little evidence of an effect of phylogenetic relatedness on our I (mammals: K = 0.16, P = 0.26; birds: K = 0.02, P = 0.81).