My Barred Rock is a Maran! French Black Copper OR feather leg variety of Cuckoo Maran?

[chickiechickiebawkbawk]

Hi I'm new to raising chickens and this website but it has been very helpful since I started chickening March 17th.
If my research is right, I accidentally got a Maran in with my Barred Rocks from the farm store. Can anyone tell me if it's a French Black Copper Maran or a Cuckoo Maran (feathered leg variety)?
I'm kind of excited for a surprise chick in the bunch. They are four weeks old now but looked the same when I picked them up as hatchlings.
She is smaller than the Barred Rocks (see photo of both grazing) and doesn't seem to have many tail feathers coming in but her leg feathers are. Cute!

 

[Painted Calls]

Cuckoo cockerel.

 

[chickiechickiebawkbawk]

Cuckoo cockerel.

thanks
was thinking/hoping it was a pullet since it was factory sexed

 

[Painted Calls]

They are human and make mistakes. I could be wrong, but that comb says cockerel.

 

[chickiechickiebawkbawk]

They are human and make mistakes. I could be wrong, but that comb says cockerel.

Ok thanks.