I am new to the chicken world, and I bought 18 chicks from a hatchery. They are only 8 weeks old now, and I know they still have a ways to go before giving me any eggs, but in my impatience, I went yesterday and bought 4 hens, 3 RIR, and one very large grey one.....? full grown. I was so excited about getting eggs that I couldn't hardly sleep last night. This morning I was so disappointed...No eggs. Is there any way to tell how old a chicken is, or tell if they are getting ready to lay an egg? also, does stress play a role, like moving to a new environment have anything to do with it?