| ORIGINAL BOOK REVIEW by Dr. Rainer R. Erhardt "Well, there is help on the horizon and anyone seriously interested in color genetics should take a look at Linda Rubin's book: COCKATIEL GENETICS MADE EASY! Though this book is primarily directed to breeders of cockatiel mutations, there is enough information in this volume to teach anyone the secrets of dealing with recessive, sex-linked, and dominant mutations..." ACBM, Vol. 65, No.12 CLICK TO READ THE REST OF THE REVIEW 112 pages, 15 chapters, glossary & more! |
Copyright 2006 Linda S. Rubin
| Multiple Bird Households by Linda S. Rubin |
| Series by Linda S. Rubin |
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| WHAT IS A CINNAMON & HOW TO BREED ONE Copyright © 2003 LINDA S. RUBIN CF Genetics Consultant/Panel Judge www.CockatielsPlusParrots.com Selected Q&A's "From My Mailbox" Q. I am new to cockatiel genetics and have been wondering how Cinnamons are created? I have a new little Cinnamon male that is around 3 months old. He still has female markings like the tail-bars and under-wing spots. He is whistling quite a bit and doing a lot of head bobbing. How do you get a Cinnamon? Do they come from certain parents or is it a toss-up? Is it really a Pied but just solid? Thanks, A. Because your young bird is whistling quite a bit, it is most likely a male. If your cockatiel is a male, it will start to lose its immature plumage (e.g. yellow tail-bars and under-wing spotting) upon its juvenile and adult molts when its face will color out to a bright yellow mask with a vivid orange cheek patch. The Cinnamon mutation is a modified melanin pigment that ideally should appear as a rich, chocolate brown ground color. It should lack any evidence of light spots or “marbling” on the back, which is a reduction of pigment that can appear in some individuals. This reduction in color, or presence of marbling, is considered a fault on the show bench. The Cinnamon is an inherited, sex-linked mutation that is carried on the cockatiels’ one pair of sex chromosomes. The gene for Cinnamon must be present in at least one parent in order to be passed on to its offspring. As with all sex-linked color mutations, the results of the progeny depend upon which parent is affected by the Cinnamon gene. For example, if the cock is Cinnamon, it will throw visual Cinnamon daughters and sons that are only split to Cinnamon. If the hen is Cinnamon, it can only produce sons that are split to Cinnamon, and any daughters produced will remain unaffected. In other words, daughters do not inherit the gene for Cinnamon from their mothers. These examples hold true if we assume the above birds are paired to non-Cinnamon partners. If a cock carries the gene for Cinnamon (called being split to Cinnamon), it will throw Cinnamon daughters and split sons. However, if the hen it is mated to is also Cinnamon, then all the progeny produced will be visual Cinnamons. In sex-linked mutations, a hen can never be split or carry the gene for Cinnamon but must either show the mutation visually, or she is unaffected. The Pied mutation is not sex-linked, but rather a recessive mutation and is completely unrelated to the Cinnamon mutation. Pied is inherited on the autosomal (body) chromosomes - not the sex-linked chromosomes. Therefore, Pied has nothing whatsoever to do with Cinnamon. The Cinnamon mutation is not a solid Pied. Cinnamon and Pied are two completely separate mutations; one has nothing to do with the other. |
| WHAT IS A CINNAMON & HOW TO BREED ONE Copyright © 2003-2006 Linda S.Rubin All Rights Reserved |
| Copyright 2007 Nancy Mello-Johnson Click on thumbnail for larger image |