Here we have a pair of "Black Hooded Red Siskins" If you look at them the cock looks totally different to the hen.
This is referred to sexual dimorphism [Mosaic]
Then some one had an idea of crossing a Siskin with a canary and produced a F1
Here we have a F1 [first cross]
Originally I believe that first cross was done with a roller canary and in the early days the Red Factor as they were called was shown in a Lizard show cage in the UK, and very often the exhibits used to escape through the drinker hole of the show cage.
They then found that some of the Hybrids were fertile.
During further breedings some of the female offspring was very heavily frosted and were discarded as inferior, but infact they were following the hens dimorphic pattern [now called Mosaic]and gave the Red Factor something no other breed of canary had up to then and that was a third feather type "Mosaic".
Last edited by Red devil on Tue Aug 11 2015, 14:48; edited 1 time in total