My hen stopped laying last Wednesday. She laid a HUGE double yolk egg last Monday, none Tuesday, then a small white rough egg that was very bloody in the white and yolk last Wednesday. She hasn't laid since. She is eating and drinking well, sits on her nest a lot, but no eggs. What could be wrong? I checked her vent area and don't feel anything that feels like an egg, so I don't think she's eggbound. We are new at chicken 'farming'- we got our 5 hens and a rooster last September. They have been laying since November. We have heat lamps on from 4am- 9pm so they have light and heat. Their coop seems big enough. There are a few black feathers in her nest but not a lot. We also have 3 RIR hens, 2 buff ? that we got 3 weeks ago, and 1 Kuckoo Marans Roo. All are laying, even though they seem to be slowing a little bit- we were getting 5-6 a day, now 3.......what is going on?