We have a Rhode Island Red that stopped laying a few days ago and looks as though she has gained a bunch of weight overnight. We just lost a Barred Rock last week that showed the same symptoms. She quit laying for about a month and a half, gained a bunch of weight and just fell over dead in the coop one day. After we started looking back, we had a Black Silkie that did the same thing. We thought she had stressed herself out trying to steal and hatch all the other chickens eggs, but we kept taking them from her. She quit laying. She was always very fluffy, so we never noticed any weight gain, but she just fell over dead one day. I am looking online for reasons this may be happening, but am not finding answers. I'm hoping someone can help me please!