Some strains of these breed are good layers while others are bred principally for meat. Plymouth-Rocks in general lay large size, medium brown color eggs. A hardy bird even in cold weather, they tend to lay consistently all year long
Plymouth-Rocks are very respectable layers of the large brown eggs. They average around 200 eggs per year which equates to roughly 4 eggs per week.
The Leghorn is an intelligent and resourceful bird, and it will find its own food if allowed to range. Ther are good flyers, will roost even in trees.
The Leghorn is a sirm favorite of the industrial poultry concerns. She will lay anywhere from 280-320 eggs per year. This equates to 4+ eggs per week.
The Rhode Island Red is a no frills kind of chicken. They can exist quite well on sub-standard feed, although of course it is not recommended.
The Rhode Island is very good at laying eggs. It is hard to surpass them in output and continuity. A good hen can lay 200-300 eggs per year. This translates to 4+ eggs in a week.