Table 2. Controlling for possible gender differences, and site differences, individuals who maintained a positive balance of circulating carotenoids were greater in body mass.

Variable	Estimate	SE	Ddf	F	P
Gender	0.94	1.01	15.46	0.87	0.36
Streamer length (mm)	0.03	0.13	15.64	0.07	0.79
Throat Color	0.60	0.01	17.24	3.28	0.08
Mass (g)	0.56	0.25	17.41	4.74	0.04

Results portrayed are from mixed models of changes in carotenoids between two successive sampling events as a function of morphological measures in males and females. Adjusted R-squared  = 0.53. Numerator degrees of freedom  = 1, ddf =  denominator degrees of freedom. N = 27 individuals.