Something that could complicate the genetics is that more than one gene can be responsible for the color. Maybe not in you example of albino rays, but likely for the color differences seen among the Motoro.
The genetic chart on Frank's website show the genetics of birds.
This kind of genetics is called "sex-linked".
Found this comment on the genetics of birds:
Sex-linked traits seem to be fairly common in birds so let’s start with the pairing of any one sex-linked color. (All mutations showing these results are found on the sex chromosome which determines the sex in higher forms of life, hence the name sex-linked.) In birds, males have a double set of complete sex chromosomes where hens have only one complete set. (The reverse is true in mammals.) http://petbirds.wordpress.com/2007/10/16/color-genetics-for-the-novice-parrot-breeder/
