The second pair I suspect is: platinum blue cock and platinum blue hen. I suspect I have: aust blue/platinum cock and platinum blue hen. I posted pics on the red rump Facebook account you recommended. I've sent her a message asking if she would be willing to ship to US if I pay additional postage.Īny into would be very helpful! I've been told by the breeder that the silver is the result of the platinum gene. Thanks Mike! Tried to purchase but she is only shipping to AUS. So Faded diminishes the intensity of just black, while Pastel reduces the intensity of all colours. Pastel result in a reduction in intensity of all colours - so greens and blues for instance are a lighter colour than they would be in a normal bird. Superficially it can result in a bird looking rather like a cinnamon but a true cinnamon will have no black at all, while a faded will retain some shades of grey where black was previously present. It doesn't change any other colour except by reducing the black pigment which may possibly have an effect on that colour if black pigment is also present in the feathers. You are getting beyond me here Nancy - I was never too involved in Red-rump mutations, and my knowledge is a few years out of date, however I will writ ewhat I can - about th emutations in general since I don't know how it applies specifically to Red-rumps.įaded mean that there is a slight reduction in the amount of black pigment in the bird, often giving a brownish tinge to the colour. Not helped by breeders giving popular names designed to sell a bird rather than the proper name to mutations. Red rump mutations can be a mine field - especially when breeders with little or no understanding of genetics try to give genetic information. That pairing will give rubino hens and lutino split opaline cocks - so sexable when they feather up in the nest. She must be a straight lutino, no splits. Then there is the hen - a hen cannot be split to a sex-linked gene - so she cannot be split to opaline. A rubino is a combination of lutino and opaline - in Gencalc you will click on both the ino and opaline buttons in the visual column. The suspicion about the breeder is reinforced by the second pair. The photos I've seen labelled Australian Blue look to me to be just the usual recessive blue - while I don't have a clue what they mean by silver - maybe platinum? And how do you get a female that is a platinum silver split to platinum silver - doesn't make sense to be a mutation and be split to the same mutation - confirming my suspicion the breeder doesn't know what he is talking about! I suspect the silver is just a recessive faded mutation so perhaps just put faded in the calculator and substitute silver for faded in the answers. If you go to and look at the Red-rump mutation at the bottom of the page, there are photos of both a natural orange and a natural opaline orange - both are superimposed on the normal colour, modifying that colour. If I enter the birds as 1.0 cinnamon split orange and 0.1 as orange I get Secondly I think you must have entered opaline as a split rather than as visual - make sure the opaline button is clicked in the visual column and not the split column. You will be pleased to know that both recessive and dominant work the same in parrots as mammals. And in birds sex-linked operates the opposite of mammals so that a hen cannot pass it on to her sons but a cock can pass it on to his daughters, and they will show the mutation rather than be split. Gencalc is written by a geneticist.Ī couple of things there - opaline is a sex-linked gene not recessive. However for a son to appear platinum his father would also have to be carrying the platinum gene, at least as a split, so that the son can end up with two platinum genes in his DNA and hence show platinum colourįinally the use of a slash between multiple splits is an avicultural practise not necessarily a genetic scientist practise. In a simlar vein, the hen's platinum gene is a sex-linked gene which means genetically she is unable to pass that gene to her daughters, but can pass it to her sons. If you paired them and got any blue babies that would indicate the hen is split to blue. The reason you would get normals from that pair is that the cock bird has a recessive gene - blue, which means for that colour to appear in any offspring the hen also has to be carrying that gene, either visually or as a split. Well actually three questions here Natural means exactly that - the colour that is it's natural colour in the wild -ie a normal in avicultural terms.
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