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| Date: | 5/21/2013 11:09:23 AM |
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Morning Biscotti
Annie's lesson in 'tiel genetics for Everyone.
Your little pinfeather is a WHITEFACE LUTINO. This is NOT an albino - albinism is caused by a single recessive gene that has to be paired with an identical gene to produce an albino offspring. White cockatiels come from two different genes - the whiteface gene and the lutino gene.
Lutino cockatiels are pale yellow; the lutino gene suppresses all gray coloration. To see what a lutino looks like, check out Marigold (226240).
Whiteface 'tiels have white faces and no cheek patches; the whiteface gene suppresses all yellow/orange coloring. BC examples of whitefaces include my frother Buddy Beak, and Pepper (168969).
So what happens when you combine the lutino gene with the whiteface gene? You get a 'tiel with no gray, yellow, or orange - in other words, pure white! The eyes are red as well, since the lutino gene is suppressing the iris coloration.
I love the picture of Pinfeather with his/her clutchmates. You can see that the parronts produced one whiteface lutino, two lutinos, and one normal pearl. I'm not sure what the parronts are but it's obvious they have some combination of whiteface, lutino, and pearl in their genetics. |
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