Hi guys, I have a 1 year old hen that just twitches in the rear and wonder why she is doing this? Its been happening for about a week now.. She stopped laying 4 months ago.. I also checked if she is eggbound through the vent and didnt seem to find anything?(unless I checked incorrectly). She eats and drinks fine.. Sometimes throughout the day she puffs up and sits in the corner shaking like this... Any insight would be helpful on how I should proceed..