Who could my mommy be?

[Waveron]

My hen Gypsy hatched out 5 chicks, and until recently I thought they were all hers... now that some of the feathers are growing out, I'm not so sure. The chick has some light barring, but I don't have a barred rock. The father is Sultan (name not breed) and there are a few possibilities for mothers, here are my hens, and maybe you all can help me figure out who mom is.
Here is the chick:

And here are all the chicks that were hatched.

****************************************************
Sultan (dad)

Possible moms:
Gypsy

Maud

Mildred (the white one)

I don't think it was Beatrice's chick because of the comb:

Or my polish because there is no crest.
Do any of you know the answer to this mystery?

 

[Sonoran Silkies]

Possibly Mildred, especially if she is recessive white, which is essentially a switch that turns OFF the colour and pattern genes. If she is recessive white, then breeding her to a bird who is not recessive white will give the offspring only one copy of recessive white and thus not activate it. Whatever genes she is hiding and passed on will show in her offspring.

 

[Waveron]

Is this how the barred rock came to be, or do you know?

 

[ve]

I agree that only the white hen can hide the barred gene because this is linked to sex chromozone. She will pass the barred gene only to her make off-spring. Females will not be barred. To produce barred females you need a barred father who can produce barred males and females.

 

[ve]

post word correction: she will pass barred gene to ' male ' offspring.

 

[Sonoran Silkies]

Is this how the barred rock came to be, or do you know

huh?​