Hello and welcome to BYC!
Glad you joined.
I have never grown fodder. No help there.
Chickens like to jump/fly up on branches and other objects to perch. I have collected old wood stools and chairs out for trash pick up and put them in the pen or run and my birds like to hang out on these. Find some stumps of differing heights and diameters and make an arrangement with them for perching on and digging around. Lean a free wood pallet up against the run wall. Put a thick layer of wood chips (can get for free at many municipalities), dried leaves, dried pine needles or a combination of any dry organic material you can find. They love to scratch around in dry organic material.
The little white pullet might be a leghorn. They are petite and tend to be on the flighty/skittish side but that is not necessarily a bad thing. It gives them predator awareness. And like it or not, someone will be at the bottom of the pecking order. As long as she is not being ostracized, let them work things out.
