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Go Back   Talk Cockatiels Forums > Cockatiels > Cockatiel Breeding > Cockatiel Mutations and Genetics

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Cockatiel Mutations and Genetics This is the place to ask any questions you might have about your cockatiels mutation, or about potential breeding results, etc.

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  #21  
Old 12-15-2016, 08:18 AM
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When posting things from other sources, you need to include the website you got it from for copyright reasons.

Dominant silver is the ONLY mutation that can be double factor or single factor. Whiteface/pastelface are recessive genes. Just because something comes from a cockatiel society doesn't mean they're right.

If the bird IS dominant silver and cinnamon, that's a horrible pairing. From what Susanne had said of the silver mutation, it should never be mixed with cinnamon or lutino. She said it really shouldn't be mixed with any mutation, as it muddles the coloring, but cinnamon was the worst because then you can't visually tell the bird is actually a silver. The whole point of the silver mutation is to bring it out visually in the bird, which can only be done by breeding it to normals or to another silver (which isn't advised because there tends to be a higher fatality rate in the nest, especially in silvers.)
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Snowball-whiteface cinnamon cock
Jeep-normal gray cock
Pebbles-whiteface pearl pied hen
Pankakes-PF cinnamon pearl pied cock

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  #22  
Old 12-15-2016, 08:23 AM
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% from all 1.0
100.0% 1.0 natural pastelface /cinnamon blue(whiteface)
% from all 0.1
100.0% 0.1 natural cinnamon pastelface /blue(whiteface)
This is what you get from that pairing with the mother being a pastelface.

If the father is silver, you'd get:
% from all 1.0
50.0% 1.0 natural ashen_dilute(dom.silver)(sf) blue(whiteface) /cinnamon
50.0% 1.0 natural ashen_dilute(dom.silver)(sf) pastelface /cinnamon blue(whiteface)
% from all 0.1
50.0% 0.1 natural ashen_dilute(dom.silver)(sf) cinnamon blue(whiteface)
50.0% 0.1 natural ashen_dilute(dom.silver)(sf) cinnamon pastelface /blue(whiteface

You can get the visual whiteface baby that you posted if mom is a visual pastelface that got that way by having one pastelface parent and one whiteface parent. If it was silver the breeder was talking about, the babies would be single factor because only dad is silver, mom is not.
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Pankakes-PF cinnamon pearl pied cock

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  #23  
Old 12-15-2016, 08:25 AM
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I'll let you know the response when i get one.

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Last edited by chefontheloose; 12-15-2016 at 08:29 AM..
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  #24  
Old 12-15-2016, 04:32 PM
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Smile unknown mutations

I have posted before on here that I know next to nothing about all the 'tiel mutations. But I just wanted to say you have a beautiful flock! They are all lovely birds!
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  #25  
Old 12-15-2016, 04:51 PM
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Quote:
Originally Posted by Janalee View Post
I have posted before on here that I know next to nothing about all the 'tiel mutations. But I just wanted to say you have a beautiful flock! They are all lovely birds!
Thankyou so you much. So far everyone is happy and healthy.

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  #26  
Old 12-20-2016, 07:27 AM
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They are all so gorgeous! Great flock!
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  #27  
Old 12-20-2016, 07:28 AM
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Quote:
Originally Posted by Vickitiel View Post
They are all so gorgeous! Great flock!
Thanks Vicki. I can watch them for hours.

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  #28  
Old 01-16-2017, 11:57 AM
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Tuning in late to this conversation... Double Factor is a term that is used to indicate a bird that has two copies of a DOMINANT gene. In cockatiels, dominant silver and dominant yellow cheek birds can be visual with either one copy of the gene (single factor) or two copies of the gene (double factor). The term isn't used with recessive mutations like whiteface. A bird that has two copies of the gene is visual (you can see the mutation coloring) and a bird with one copy of the gene is split (you can't see the mutation coloring).

That "different" calculator readout is from GenCalc at http://www.gencalc.com/gen/eng_genc.php?sp=0Cock It's harder to work with than the Virtual Breeder (Kristen Munn) calculator, but it does have some advantages. It can handle crossovers and the easier calculator can't.
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  #29  
Old 01-16-2017, 12:06 PM
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I think I know where the confusion over "double factor whiteface" came from. Looking at the GenCalc display at http://www.gencalc.com/gen/eng_genc.php?sp=0Cock there's a column heading that says (df)(sf). But if you look at the choices below it, dominant silver is the only mutation where you can choose between these options (this calculator can't handle dominant yellowcheek). It's just poor visual design, since this terminology doesn't apply to almost all the mutations listed under the heading. It would have been better if they'd made a separate section for dominant mutations instead of sticking DS in the middle of a bunch of recessive mutations.

P.S. You'll notice that there's no option to choose a split for dominant silver, because there are no splits in a dominant mutation. A bird will be visual with just one copy of the gene.
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Last edited by tielfan; 01-16-2017 at 12:13 PM..
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  #30  
Old 01-17-2017, 12:06 PM
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I didn't read the thread carefully enough the first time lol. It was Roxy who posted GenCalc results, not the OP. Looking more carefully at the previous conversation, it's mentioned that the OP is using a program called Birds Evolution Pro, and it looks like it actually does use "SF" in connection with cinnamon and whiteface, but this terminology doesn't apply to either one of these mutations. The English on the website is kind of odd so it doesn't look like their native language, and they may not have understood the correct terminology. I can't see enough to know whether they understood the genetics correctly or not. Here's the website: http://www.birdsevolutionpro.com/
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