Any idea what breed she is?

[MysteryChicken]

Not exactly true to my understanding. She would be a Black Sex Link, but not a Black Star. They're a subcategory of Black Sex Links defined by crossing a New Hampshire or Rhode Island Red with a Barred Rock The two terms aren't necessarily interchangeable similar to how all ISA Browns are Red Sex Links but not all Red Sex Links are the specific ISA Brown cross

That's not what I meant, I was using as an example for Black Star, or Black Sex-link.
Trying to simplify alittle.

I'm also tired, so my examples maybe abit wonky.

 

[RoostersAreAwesome]

This is Cinnamon, she’s about three years old but I have no clue what breed she is! She lays large light brown eggs, most likely a mixed breed. We’re guessing she’s part red jungle fowl, if anyone can tell please tell me

Where did you get her?

 

[TinyRaptorDodos]

Where did you get her?

My horseback instructor

 

[RoostersAreAwesome]

My horseback instructor

Oh, I was wondering if you knew if she was from a hatchery/feedstore. If so, she would definitely be a “normal” black sex link. But, even though where she originated is unknown, she’s still most likely a “normal” black sex link.

 

[danceswithronin]

As others have said, looks like a Black Sex Link to me, but I wanted to comment to say what a beautiful bird! My god-sister has a whole flock of this type and they're just gorgeous animals.

 

[TinyRaptorDodos]

Oh, I was wondering if you knew if she was from a hatchery/feedstore. If so, she would definitely be a “normal” black sex link. But, even though where she originated is unknown, she’s still most likely a “normal” black sex link.

She was raised in a classroom of kids, that’s all I know