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Inheritance practical: One cross - many findings

For some breeders the mating of different colors and breeds in pigeons is a lottery and full of surprise. For others it is a source of new findings and the review of theories and statements.

What tells us this intersection of the blue magpie cock and his yellow shield owl dam?

Blue magpie sire and yellow check dam with dominant red and silver dark check hen

Wing patter of the silver dark check hen

1. shield marking is largely lost in the first generation. The white flights are a separate characteristic and play a role for their own. That can also be observed in other piebald pairings.

2. Red, and the diluted yellow shield pigeons are genetically dominant red. This is reflected in the dominant red young cock.

3. The pairing shows the sex-linked inheritance. At this mating you can determine the sex of the males on the base color. Dominant Red are males and young with black color are females.

4. The female is a silver dark check with striking bright beak compared to her brother. We could learn: dilutes have brightened beak even without the factor smoky that in other combinations is necessary.

5. The silver dark check young female is a dilute: Her father shows the dilution trait not in his appearance. He is thus genetically heterozygous dilute and that should be noted down in the breeder's notebook.

6. The dilute young female is not an unique exception: 50% of the daughters from this cock will be dilutes.

7. The pattern of the yellow shield Owl is dark check: the magpie cock obviously from his one-sided faulty magpie marking  genetically is bar pattern. Thus the dark check pattern of the dominant red and silver young (due to the dark pattern and additional darkening traits only visible at the spread wings) must have come from the yellow shield mother.

...

These are only  some insights from a single cross. From a different perspective with some skill they can help to achieve a specific breeding goal. In his book on problem solving techniques 'How to solve it' George Pólya speaks from the 'work backwards' strategy. Not everything in genetics, however, will be necessary to explore yourself today. One can draw on more knowledge from the past than most breeders know.