The chick sitting on the roost box is a pullet.
I can see 3 pullets for sure. 1st and 2nd pics.
In the 3rd pic, looks like 4 pullets and 2 roos the other 2 cant see the wings.
In pure wheaten marans chicks the roosters get darker wing feathers and will have black chest feathers when they come in.
The pullets will have the lighter color wings and light breast feathers.