Effects of broad-spectrum (visible) light on principal components (PCs) of eggshell reflectance.

See Fig. 2 for the relationship between PCs and reflectance spectra. Slope data are from egg-specific linear regressions of each PC on exposure time in hours. A negative slope indicates that the color variable decreases with time when exposed to light. Small magnitudes of the slopes indicate that the changes in response to the light treatment are dwarfed by the variation among eggs (the Rüppell's weaver has variably colored eggs).Effects of broad-spectrum (visible) light on principal components (PCs) of eggshell reflectance.