Just curious, we aren't really trying to get one. The youngest chick of Kramer and Hedwig is showing a brilliantly violet tail. Is there anyway to tell if it inherited both parents violet factor.

what colours are the parents? it also depends on the genes of both parents. otherwise, one parents gene would be dominant and therefore showing through.

You probably cannot tell for sure whether a budgie is DF violet unless you test breed it, and find that it always throws violet factored offspring. The test mate would of course, have to be NON violet factored, or else it will throw off your results, leaving you still uncertain.

 

I don't remember what dark factors Kramer and Hedwig have. But if they can throw sky blue and cobalt offspring, then you will have a hard time telling whether the chicks are SF violet skies or cobalts, or DF violet skies or SF violet cobalts.

 

Here is a color plate from Genetics for Budgerigar Breeders by Taylor and Warner, 1961, that illustrates the subtle differences and similarities that the dark factor and violet factor can cause:

 

You may have to zoom in your page in order to read the small print at the bottom.

 

This is copyrighted, and I'm not sure if I'm allowed to post it here, but I have given it proper credit, so I think I'm covered.