I am new to raising chickens. We got 6 back in march of this year that were about 4-6 weeks old when bought. They are now kept in a large completely pinned in area with a large dog house as a coup. We check their food and water every day and some days when i am home i will let them run around our back yard. We are finally getting one egg a day with no egg every 3rd day. The rest of my flock is still not laying. Is there anything i should be looking for that might be prohibiting them from laying. I am at a loss and any ideas would be a big help. Thanks.