It is possible the eggs got mis-labeled, or the chicks got mixed. An Olive Egger is indeed the result of a Welbar roo and a Legbar hen. Though the cross works the other way also, I find blue eggs easier to incubate and hatch.Dennis, both Boo and Dragon turned out to be Oliver eggers. Boo just laid her first egg today and it’s green too. They looks very similar and are different from Winnie-the-Pooh the legbar. Left to right: Boo, Dragon, and Winnie-the-Pooh. Is that possible your Welbar roo had affaire with legbars?