Is my yellow duck a pekin?

[bens1egel]

Hello, tractor supply said the yellow duck is a pekin but I would like to make sure since he has tiny black line near his head. More pics posted below!

 

[Silviaschicks]

Hi, you should probably post this on the duck thread

 

[Lollychicken]

Don't think he would be a Pekin, they usually have orange beaks