Ok here are some pictures - I named them for reference but you can see a few angles plus a picture of one of the hybrids (looks great) and the other Americana (I know it's spelled differently but I'm tired of fighting autocorrect) - she seems normal although also not laying any blue eggs right now.
I have this same issue with one of my Americanas - she is definitely at the bottom of the pecking order. I find her feathers in the run and some in the coop. She roosts in the rafters so she's not getting pick on at night but I find them in the run for sure. At first it was just around the tail...