I have 6 chickens approximately 16 weeks old, I have 2 that seem to be laying, I presently am getting about 1-2 eggs a day, inconsistently though they seem to skip a day here and there. Is that normal? And when do the rest of the girls start producing? I wish I could tell you the type of chicken I have, but my husband and daughter had picked them out and other then Plymouth Bard (which I have 2 of) I do not know what the other 4 are.