
Birds will appear blue in color only when a bird carrying only "green" sex chromosome(s) (as opposed to yellow) is also DF for the blue body gene.
What do I need for the female in order to get a blue baby? From what I've read so far, there has to be a double factor blue (visibly blue) female in order to get blue babies. Is this the only possible match I can have?
Thank you for any help!