I see it all the time. Once in a while...you will get one or two roosters or hens that are 'OUTLIERS' and that will end up 'not' looking like the 'standard' or type for your particular breed/strain...even though BOTH parents are purebred.
For example...I see some purebred Shamos that sometimes come out looking more like Thai or Asil. I sometimes will see some purebred Asils that come out looking more like Shamos. Sometimes I will see purebred Thais that come out looking more like either Asils or Shamos.
So...I don't get it...? Are these birds pure, but just not breeding true and therefore would be considered an outlier in the gene pool...? Or worse...They are not even pure to begin with and is obviously a mix/hybrid.
Its even common in other animals too like horse breeding. For example...breeding Thoroughbred horses and having one come out looking more like a Quarter horse even though both parents are purebred Thoroughbreds.
Which begs the questions...
1. How 'PURE' is Pure...?
In other words...Could there have been a cross/mix somewhere in the past within the history of the family tree and that you are not aware of and that has gotten mixed in the gene pool and somehow got passed down to the outlier...?
For example...noobie cockers who attain 'LOW QUALITY' stock to begin with and are lied to from their source/seller claiming its pure, when its obviously not.
2. Is it just a given or 'normal' to always have outliers in the gene pool, even within proven/well established purebred strains/breeds...?
3. How often is the occurrence for outliers...? Say...1-2 times every 2-3 generations...?
4. How do you breed 'true' in your own pure bred strains so the occassional 'outlier' does not occur or happen as often...?
Any suggestions and/or tips would be greatly appreciated.