I am having the same problem. We just started raising chickens and have been lurking on the forum for a couple of month and it has been a tremendous help. We started in June with 8 hens and a rooster from a friend. We were consistently getting 6-7 xl/jumbo eggs a day. We added 9 more hens about 3 weeks ago. 6 were just starting to lay and the other three had not started yet. We put them all in the same coop and they free range most of the day. After adding the new chickens we were getting 10-11 eggs for the first few days. Now were are back to 6-7 eggs a day and it is a mix from the old and new hens. We have 17 hens and at least 14 should be laying but we only get 6-7 eggs. They seem to have adjusted to each other and all get along. How do I increase there production? I am feeding twice as many chicken to get the same number of eggs and now that includes smaller eggs. Any advice appreciated.