by Pajarita » Fri Jun 13, 2014 1:15 pm
It's actually harder than people realize, Wolf. Breeders call it 'line breeding' but this is nothing but a euphemism for inbreeding ('line' comes from 'blood line' so what they do is breed birds from the same blood line which means they are all related). They always say mutation colors are not 'man made', that they are natural but it's VERY rare that you find them in nature. I come from one of the countries that have quakers, I must have seen thousands upon thousands of them and they are all, without exception, the normal green. A blue quaker means one that was born with a defective gene so the plumage does not have the yellow pigment and this leaves just the special structure of the feather which reflects blue light (blue is not a pigment, it's a structural color) but there are two things to consider:
a) a blue bird mating with a normal will just produce splits (it's a recessive gene) and no visuals so, when these split birds (which look green) mate with another normal green bird, you get only 25% of split birds and, again, not a visual blue so the blue disappears.
b) a defective gene is a defective gene and nothing in genetics is 'defective' and affects only one thing, all defective genes have health consequences. Breeders say that the undesirable side health effects can be 'bred out' but it takes years and years of breeding them back to normals to do this and, I don't know if you noticed, but we are getting new weird mutations all the time so it's obvious the breeders are not really taking the time to do it right. Just in quakers we now have:
- pallid
- blue
- pallid blue
- cinnamon blue
- turquoise
- pallid turquoise
- cinnamon turquoise
- cinnamon
- grey
- cinnamon grey
- greygreen
- albino
- aqua
- fallow
- yellow
- lutino
- white
- violet
- pied
Now, if all these mutations have been achieved through a 'good' breeding sequence in order to 'breed out' the bad side effects, how long would it have taken? 50 years? (and I am been conservative!) You are talking about two entire lifetimes of two different individuals working all their adulthood with one picking up where the other left off without really selling a whole lot of babies (because, if they don't sell the defective ones and keep the healthier ones for breeding, they would not have that many to sell - which brings another question to mind: what did they do with the defective babies if they did not sell them?)- now, I ask you, what is the possibility of that happening? I tell what they are: zero! Because 25 years ago, there were no mutations!