We have 5 hens but get 6 different colored eggs! Do older hens sometimes lay eggs without pigment? We have 2 Aracaunas that lay green, an EE that lays blue, and an EE that lays pinky brown, and then 2 other eggs, one that is brown like the EE's and one that is white but kind of with a greenish tinge. Oops forgot to mention the older hen is a 4+/- year old barred rock. I suspect she is laying the other brown and sometimes white egg since the other 4 have always laid the same colored eggs. So, I guess it's not a mystery after all lol.