Green Euwing Opaline | Euwing Mutations Lovebird | World's Most Bizarre Birds How to identify a Euwing lovebird? In the Euwing mutation, there will be color gradation on the wings, gradation yellow for mutation Euwing Green Series. And the gradation of gray color is a mutation of Euwing Blue series. It can look narrow to a single factor (SF) and will look wide for the Euwing double Factor (DF) mutation. -CTTO











