You know what I think? Last fall I bought a few white leghorns from a similar type of place: they were point of lay and had been raised and housed in a chicken house type of situation. They had even been debeaked. I took them home and for the first week or so I was drowning in eggs! Then, slowly like you, the production tapered until they stopped completely. I couldn't figure it out until I saw a lot of excess feathers in the run and coop. I really think that these "farm" or "factory" type places that sell point of lay pullets keep light on their birds 24/7, for whatever reason. Predator deterrent, fast growth, whatever their reason, I believe this is the case. So, if you take a bird that has lived in eternal light since birth and suddenly put it into a regular daylight/dark night environment, it stimulates an early molt. I could be totally off base with this, but I do truly believe there is some merit to my theory. Try upping their protein? Good luck!
