What breed is this chickie?

[RichardsonC19]

Hello all! I recently ordered 5 chicks from Meyer hatchery, I have one Im unsure breed and I'm hoping someone here can help me. Shes about 3/4 weeks today and ive included a pic from today. Her wings are black and white, she is also growing the slowest. All 4 others are almost fully feathered at this point. Thank you in advance for any help!

 

[Cyprus]

Looks like an exchequer Leghorn.
Whatever it is, that is likely a cockerel.

 

[Gray Farms]

Mottled Ancona or Mottled Java.

 

[RichardsonC19]

Interesting! What makes you think it is a cockrel?

Looks like an exchequer Leghorn.
Whatever it is, that is likely a cockerel.

Looks like an exchequer Leghorn.
Whatever it is, that is likely a cockerel.

 

[Cyprus]

Interesting! What makes you think it is a cockrel?

The comb growth

 

[HuffleClaw]

Ancona