Only 1% of Chickens breeds for meat and eggs for American families are traditional breeds.
Out of that 1%, far fewer are actually raised to Breed standards. Most of that 1% are simply Hatchery stock that, sadly, barely resembles the breed whose name they bear.
Do something radical.
Purchase your poultry from a real person who is working to not only retain the type the breed should have, but who raises the breed in a way which actually makes it a heritage animal. . .
Bearing the name alone does not a heritage animal Make.