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Table 2.

Effect of treatment on breast coloration in American goldfinches

Yellow
Ultra-violet
Breast colorationHueChromaHueChromaOverall brightness
Overall F7,40=9.90, P<0.001 F7,40=3.91, P=0.003 F7,40=1.19, P=0.332 F7,40=2.32, P=0.044 F7,40=3.49, P=0.005 
Carotenoids F=48.6, P<0.001 F=16.3, P<0.001 – F=0.21, P=0.647 F=1.77, P=0.191 
Drug treatment F=0.16, P=0.683 F=1.15, P=0.291 – F=3.69, P=0.062 F=1.03, P=0.317 
Food F=0.30, P=0.589 F=4.03, P=0.051 – F=3.80, P=0.058 F=1.21, P=0.278 
Carotenoids×drug treatment F=5.05, P=0.030 F=3.08, P=0.087 – F=2.25, P=0.141 F=7.05, P=0.011 
Carotenoids×food F=0.00, P=0.960 F=1.44, P=0.237 – F=5.75, P=0.021 F=4.94, P=0.032 
Food×drug treatment F=1.01, P=0.320 F=0.51, P=0.479 – F=0.46, P=0.503 F=6.75, P=0.013 
Carotenoids×food×drug treatment F=2.57, P=0.117 F=0.41, P=0.711 – F=2.39, P=0.130 F=1.74, P=0.195 
Yellow
Ultra-violet
Breast colorationHueChromaHueChromaOverall brightness
Overall F7,40=9.90, P<0.001 F7,40=3.91, P=0.003 F7,40=1.19, P=0.332 F7,40=2.32, P=0.044 F7,40=3.49, P=0.005 
Carotenoids F=48.6, P<0.001 F=16.3, P<0.001 – F=0.21, P=0.647 F=1.77, P=0.191 
Drug treatment F=0.16, P=0.683 F=1.15, P=0.291 – F=3.69, P=0.062 F=1.03, P=0.317 
Food F=0.30, P=0.589 F=4.03, P=0.051 – F=3.80, P=0.058 F=1.21, P=0.278 
Carotenoids×drug treatment F=5.05, P=0.030 F=3.08, P=0.087 – F=2.25, P=0.141 F=7.05, P=0.011 
Carotenoids×food F=0.00, P=0.960 F=1.44, P=0.237 – F=5.75, P=0.021 F=4.94, P=0.032 
Food×drug treatment F=1.01, P=0.320 F=0.51, P=0.479 – F=0.46, P=0.503 F=6.75, P=0.013 
Carotenoids×food×drug treatment F=2.57, P=0.117 F=0.41, P=0.711 – F=2.39, P=0.130 F=1.74, P=0.195 

Both independent treatments and their interactions are considered. The results of factorial ANOVA's are given including the overall F, d.f. and P for each tests and partial F and P values for each variable in significant tests. Bold font indicates significant results

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