My Husband and I purchased 10 1 yr old laying hens approx 4 months ago. They were laying great producing 7 eggs each day. Approximately 3 weeks ago they stopped laying all together. The weather had gotten much colder, chickens were without heat for 2 days, we attributed this to the stop of laying. It has now been 2 weeks with perfectly heated environment and still no eggs! Examining the chickens you can see the lump where the egg is sitting (not at the vent). They have become lethargic and lay on the ground. They are constantly pushing open the vent trying, but with no luck. They are eating normally with 16% lay pellet, COB, and various fresh items from the garden, but seem to have extreme diareha. They are all in the molting process, but have little to no feathers around back end. The area in which the egg is sitting is discolored a reddish bruise. I am having a hard time diagnosing, originally thinking they were egg bound, but has been far to long (2 weeks) and chickens have not died. I am baffled ... PLEASE HELP!