From a disease, welfare and husbandry perspective, the best place you can source your fertilized eggs or baby chicks from is a farm or hatchery that is part of the National Poultry Improvement Program (NPIP). To be NPIP certified as a hatchery means that the birds on the farm are tested for various diseases possibly including Salmonella (it depends on which level of NPIP certification the farm/hatchery has) which can cause your eggs to be contaminated with a foodborne pathogen (aka it can get you sick). From a poultry health perspective NPIP requires testing for various other infectious diseases that