This “breed” is really any an chicken that lays a dark green egg. There are people working on true breeding lines, but nearly all the Olive Eggers are F1 hybrids of a blue egg laying breed and a dark brown egg laying breed. There are many ways to setup these crosses and the resulting birds obviously look very different depending on the parents used.
What makes out Olive Eggers different is that we use two autosexing breeds in a way that retains the strong autosexing trait of the Welbars. This means we can guarantee that you will get a female chick.