I am new at this and I am so excited about my chickens and getting eggs, I know it's early as my chickens are only 7 weeks old but when do they start laying? I have RIR, Dominiques, Delawares and EE's. Do they all start at the same age, or does it matter what breed they are? I have 4 nesting boxes and 11 chickens (not all hens) is that enough boxes? How many times a day do I need to check the boxes for eggs? Thanks.