Slow developing roo or a young Pullet? - Lemon cuckoo Pekins 4 weeks old

[purplesquirrel]

I hatched 4 chicks from some eggs I bought online.
I sold 2 and kept 2, hoping that I had guessed right for one male and one female (to breed my own pure - (this is the first generation of new blood, with a 50% chance of being related at all)
One was always much smaller than the other, I actually had to help it hatch - this was the reason I did not sell this one.

One is OBVIOUSLY a roo but the other is smaller, timid, less bold and has a very small comb, but this one was born small so my thoughts are a lot of these traits may stem from being born small...

The smaller one (called Maria) has quite a pink comb and under the jaw, not peachy or yellow like a female comb normally is, but no where near as bright red as my other one's (Lucas)

Here are some photos:

Maria:

Lucas:

Together:

If anyone can shed some light on this that would be very much appreciated.
Sorry about the picture quality, it's nearly 11:30pm here!

 

[Wyandottes7]

I think that it's too young to be certain.

 

[urban sunshine]

compared to the roo, it looks like a pullet, but it's too early to be sure

 

[BantamLover21]

I think that it's too young to be certain.

Agreed.

However, I'm leaning towards pullet.

 

[Michael OShay]

I think that it's too young to be certain.

I agree, but I'm also leaning toward pullet on Maria. I hope for your sake that we are correct. )

 

[donrae]

Agree it's too young to call pullet for sure, but at least there's hope.

 

[purplesquirrel]

Awh I hope not 2 cockerels I'll keep you guys posted

 

[Mountain Peeps]

She is really looking girly to me

 

[purplesquirrel]

Oh I hope she is!

 

[purplesquirrel]

Definitely a male and a female!
Maria's comb is pinky/peach whilst Lucas has a very big and bright red one! I was worried her's might suddenly blush red over night like some of mine have before (sly cockerels)...
Yeeeeeeeeyyyyy
Here they are on top of their night time box in the house (in my bedroom) as the room their brooder is in gets waaaay to cold now, and there's only 2 of them so not much snuggle with, hoorah!
The one of them curled up in my scarp was a few days ago, they slept beside me in my bed I crossed-stitched and watched a film hehe