Phyllis, I've always had one breed at a time. Or at least,
always over the last few decades. Now, I've got Australorps and Barred Rocks to compare. I've had both these breeds in the past and a couple of Buff Orpington hens.
I didn't have them at the same time but I thought that the BO's had the same color eggs as my little flocks of Black Australorps I had both before and after.
My thinking about comparisons has changed. I
thought Barred Rocks had darker brown eggs than the BA's & BO's. Imagine my surprise when one BR began laying every bit as light an egg as I'd expect from those others. Then the other BR layed a
mottled egg - brown & pink. She still does that now and then but it is usually
brown.
To add to my confusion, the BA's lay eggs that are darker than the BR's! I don't know whether it is a difference in birds or a failing of memory
. Since I want to give myself as much credit as possible, I'll say that the birds are different. Within a certain amount of range, I think that egg color can vary widely in a breed.
Steve