Opalines were discovered as a new mutation in the US in 1997. The birds are characterized by a full hood (color on the head down to the neck) and a tail where the same color reaches down to the tip. The body color goes down to the rump so that there a continuous color at the back (no rump of a different color. The opaline hoods can be red, yellow or white and the body color can be green, lime or yellow and can have a design such as pied and edged dilute or spangle. The lutino opaline has a more intense color than the non-lutino opalines. Opalines have been bred with fallows with fallow eyes but the rump color is white (the ino gene removed the usual blue color of fallows.
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