@Minky - You have a very nice variety of breeds! With a small number of hens of so many different breeds, you should be able to easily track egg production by individual hen. I have done this and I've found it very valuable in identifying my best layers. Those are the ones I use for breeding, especially hens that consistently lay well for at least two or three years. I've found that EE are some of my best egg layers, as are some of my other barnyard mix hens.