Poor breeding causing them to be rare. Low hatch rates are caused by inbreeding depression which is caused by poor breeding methods!
Isbars have a low hatch rate because of the way they are bred you are starting to see the effects of breeding small groups of birds closely together.
When people order from hatcheries they get super strong, and healthy chicks because of the way they breed, as long as you order from the right hatchery.
Also how do you know you are importing different lines? Honestly these new breeds are one import until proven otherwise... Because there is nothing that makes me think that more lines have been imported. And if you import lines from the breeds that a so rare globally chances are they are related.
Hatcheries are motivated by profits and business that is not motivated by profits is no longer in business.
Hatcheries are the best place you can buy productive stock. You can improve these ‘rare’ breeds with the correct breeding methods... You need to produce hundreds (not a few hundred but 500+) chicks select the best and follow the invasive species method of breeding!
You have no proof that breeders are using poor breeding methods. You are just stating your opinion. I also have not seen any proof that hatcheries provide super-strong, healthy chicks. In my personal experience ordering from a large hatchery in Ohio, my chicks were in poor shape when they arrived and with obvious defects that a breeder would have culled. But that is just my experience. Other hatcheries might be better.
I actually do my research with regards to imported lines. For the Cemani, there are 3 know lines (Greenfire Farms, Toni-Marie Astin, and Cemani Farms).
1. Greenfire Farms will release their Cemani sometime in 2014.
2.. Toni-Marie Astin's line is currently in the care of a group of breeders (Tina Sutton, Randy Hall, Cliff Simmons, myself, and another lady that will remain anonymous until she decides to announce herself). In addition, a trio of Toni-Marie Astin's line was auctioned off on Rarebreedauctions.com recently.
3. The line from Cemani Farms is in the hands of several breeders, the most well known one is Watson Ridge Ranch in Texas.
4. There is also a possible fourth line with a gentleman in New York that imported them in 1995. However he has kept his flock private until now and did not hold on to the importation papers from such a long time ago. This does not mean that his flock is not Cemani. It is just that we cannot trace back the origins of his line like we can with the other 3 lines.
The point of this whole conversation is that there are differences between hatcheries and breeders. In my experience, hatcheries are motivated by selling as many chicks as possible and as cheap as possible. It does not mean that they are producing healthier chicks, but ones that can reproduce at a higher rate. While there are some bad breeders out there, most are more interested in improving their line. Many of them give away their culls for free. If you really want to save some money, contact a local breeder and ask them if they have any free "less than perfect" chicks. These chicks that do not make the cut for breeding programs will make wonderful pets and may actually be high quality, just not up to the breeder's own personal standards.