I have pullets that were identicle to the roo up until about 4 weeks old.
All of them at a few days old, The oddball chipmunk striped chick was a something laced wyandotte

All of them a little older

Whitney, a pullet.

And a bit older, these two are pullets.

And the group of them at 8 weeks. L to R, on the roost; Yolanda(P), Ginger(R), Babs(R), Betty(R), Bunty(R), Whitney(P)
L to R off the roost; Meat bird(P), Sleepy(P), and Gumbo(P)

All of them at a few days old, The oddball chipmunk striped chick was a something laced wyandotte
All of them a little older
Whitney, a pullet.
And a bit older, these two are pullets.
And the group of them at 8 weeks. L to R, on the roost; Yolanda(P), Ginger(R), Babs(R), Betty(R), Bunty(R), Whitney(P)
L to R off the roost; Meat bird(P), Sleepy(P), and Gumbo(P)