I have Heritage RIR (who refuse to lay eggs). I also have some Black Australorps from Ideal Poultry. The internet seems to infer there is a difference between production and heritage Australorps but I can't find that difference. Is it the same as Heritage vs. Production RIR? Someone told me the old Australorps lay in the winter but the new ones don't...or maybe I have that backwards. Does anyone know how to find the heritage ones that came from the old stock?