Wow. Coincidence?
I have a Buff Orp. Her name is Rose. She lays nearly every day. She lays a light brown egg with white calcium deposits on top. Her eggs are nearly round . Her eggs have never changed color, and I can always tell which egg is hers.
My Barred Rocks vary a BIT.
My Marans vary quite a lot but I can always tell their eggs.
Good luck.
I have a Buff Orp. Her name is Rose. She lays nearly every day. She lays a light brown egg with white calcium deposits on top. Her eggs are nearly round . Her eggs have never changed color, and I can always tell which egg is hers.
My Barred Rocks vary a BIT.
My Marans vary quite a lot but I can always tell their eggs.
Good luck.