Expert Cower

 
Prerequisite(s): None
 
Benefit: You are so good at cowering that you can make yourself a smaller target. When there is no cover around you, you gain the effects of one-quarter cover (+2 AC bonus, +1 save bonus). When in a covered area, you are covered as if the level of cover was one place better. While cowering, you are considered immobile and flat-footed. You can only take a partial action each round and this action cannot be a movement action (i.e. you could cower behind a rock and still fire a bow once per round, but you could not cower as you run from rock to rock). The act of finding a good spot and cowering (i.e. scrunching yourself up to gain the benefits of this feat) is, in itself, a full round action.
 
Source: Mongoose Ultimate Feats