This is how the hen is supposed to look: http://www.mypetchicken.com/catalog/Day-Old-Baby-Chicks/Black-Copper-Marans-p736.aspx
I think the hen is crossed with a Black Copper Maran and an EE because of her comb and eggs.
HS Pye
Hi,
You have a mutt. The bird in the photo has a pea comb, so do EE's. It would explain the green egg. The bird however resembles the Black Copper Maran nearly exactly.
HS Pye