Meyers have a video on their web site showing how they hatch them, I have been past there and they have some big barns/sheds where they do keep a few breeds, but they also get their eggs from outside sources, the eggs come in and get set up for their incubators, then they hatch them themselves. They're pretty forthcoming if you call them. I've dealt with them a lot over the years and find them a reliable company, I think they'd answer any questions you have. You used to be able to go in for a tour, but not for some years since they tightened their bio-security.