It probably depends on the particular chicken. A hatchery bird is probably going to lay more eggs than a show quality chicken because hatcheries breed for production and not to the standard, and different lines from different breeders will be better/worse layers than others. I have two Dominique hens and their eggs look exactly like the eggs laid by my Wyandotte and Black Sexlink so I'm not sure exactly how many they lay, but mine lay medium sized light brown eggs. I don't know if they're from a hatchery or a breeder because I got them from someone and forgot to ask.