I've only had mine since spring but from what I understand is that they're considered pullets for the first year and hens afterward. They will just gradually lay larger eggs until they reach their full egg size.
Cream Crested Legbars, BCM, Rhodebars, bearded silkies, good laced/buff laced polish, black/lavender ameraucanas
Bourbon red, red bronze, royal palm, mottled black
I also make hen saddles, PM me for details!