Type
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What do we mean by zebrafinch "English type"?
- By Tony Lombard
- On 12/12/2020
- In Genetics and selection criteria
The term English type for some zebrafinch is sometimes used, but what is meant by "English type" !?
Can this type of bird (see video) qualify as an English type ?
Where is it enough that the bird comes from England ? ... Or on the contrary, is it even more typical !?
Young zebrafinch of English type in video : -
Genetic transmission of physical characteristics
- By Jan-Van-Looy
- On 27/10/2020
- In Genetics and selection criteria
If you ask at a meeting of zebrafinch lovers a question about the genealogy of the masked, the pastel, or a black cheek, you are sure to receive the right answer.
But if we ask the genealogy question about the format (size), the shape of the head or the length of the beak, the answers will be multiple and different.
Some will say intermediaries, others dominant, etc.
Nevertheless, these characteristics follow Laws of Mendel. Many breeders do not believe this explanation, but it is true. It seems that the laws no longer behave in a strict way as for the mutations of colours. A wider variation in the format (size), shape of the head, etc... seems normal.
In nature, zebrafinch have the same variation in size. And, in the process of domestication, this difference in variation has increased. Our cultivated zebrafinch are on average two centimetres wider than their ancestors in nature.
In the articles, we always recommend a hard selection at the level of format and model taking into account the differences between the parts such as the head, the body, etc.
But the format and the model are driven by genealogy. The body shapes are driven by factors.
The question that arises is: Is there a relationship between the different factors that govern the format, the model, the shape of the head and the beak ? -
General requirements of the standard
- By Marcel-Duvivier
- On 25/10/2020
- In Genetics and selection criteria
In this article, you will find all the selection criteria to look for in an exhibition zebrafinch.
Size :
From the tip of the beak to the end of the tail of the zebrafinch : 11.5 cm.
Type :
Impression of strength - Short, stocky waist - Round head - Tight neck - Relatively broad and round chest.
The head, neck, back and tail should form a single line with minimal indentation in the nape and at the intersection of the tail at the height of the rump.
The curve formed by the rounding of the chest and the belly line should be regular from the throat to the anal region.
The back line cannot be crushed and the ventral line cannot be dropped.
All parts of the body should be in harmony with each other.
Head :
Well-rounded seen from all angles - Relatively wide front view - Must be in perfect harmony with the beak and body - Eyes placed approximately in the center of the head, very lively and dark in color unless the standard of the specified variety does not give it otherwise. -
The grey male, in qualities and defects
- By Loic-Leducq
- On 08/10/2020
- In Gray, mutations and combinations
The first zebrafinch presented at the exhibition were far from those we now have in our farms. They were rather filiform and small in all respects resembling the majority of the birds that we currently find at the pet store on the corner.
The evolution does not know made in a day but it has been relatively fast. Here we will talk about the grey zebrafinch, all simply because it is my specialty, and I am starting to know it well.
We can observe that the greys, which are a classic (We call «classic» the greys and the basic mutations that are the brown, pale back and masked.), presented in the major exhibitions is no longer very far from the perfect grey. The type and size are for the most part excellent level and the difference is mainly on the color.
To locate each descriptive terms used in the rest of the article, you can use this diagram: Descriptive terms in zebrafinch.
1. The main defects of grey males
In recent years many defects have appeared in the gray we have the leisure to see in our exhibitions. I’m going to introduce a few of them that I think are most commonly encountered on display or on our farms.
a) The stripes behind the cheeks
For the last couple of years, at least from what I’ve personally noticed, we’ve been seeing signs of zebra around the cheek. This defect is rather noticeable in black cheek greys, but rather recent in grey males. It is still time to eradicate it from gray strains before it is fully generalized to grey zebrafinch.
Because of the similarity to the defect in black cheeks, I do not think it can be equated with a black cheek factor. Indeed, this defect appears even in strains having no affiliation with a strain of black cheeks.
On the other hand, we can think that this phenomenon is due to a high concentration of eumelanin (black), which is sought in gray for a dark back and in black cheeks for an intense black color.
b) Tear spreading in the cheeks
Another defect is the tear, which gives an impression of diffusion in the cheek by the presence of some black feathers in them, and of a line under the eye. Usually in my breeding these are birds that have deep chestnut cheeks. I think we still have it, we can equate it to an excess of eumelanin in this area.
