Something weird has been nagging at me as my hens fire up their spring production and bounty fills the fridge. We have a small mixed flock, a couple production reds, an Australorp and a presumably hatchery Cuckoo Marans that was sold to me as a BR. I rotate the eggs so we eat the oldest first. In the first week I see no difference in taste or appearance in the eggs according to their color. But in the second week, the Marans' (named Digger) eggs seem to remain perkier, with a tall sturdy yolk and firm white. The Australorp's eggs deteriorate first. I suppose it might make sense, she is lowest ranked. But her eggs aren't much worse than the RIRs. If I look at Digger's eggs, they look smooth and very shiny. The Australorp's eggs are the least shiny. Is this what remains of the bloom? So if the bloom is when the color is laid over the shell, does a darker egg get more of the coating? My lone Marans doesn't lay a very dark egg, but her eggs are definitely smoother and shinier. Anyone else have supporting or contrary experiences?