Fig. 6. Relationship between surface-specific CWL and mass-specific oxygen
consumption in the sparrows from Saudi Arabia (open circles) and Ohio (solid
circles). Regression was only significant in the sparrows from Saudi Arabia;
mass-specific oxygen consumption (kJ g-1
day-1)=-48.1xSurface-specific CWL (g H2O
cm-2 day-1)+1.94 (solid line;
r2=0.56, P<0.01).