Help, what breed of chicken is this?

[Baklava]

Originally I thought I had purchased 6 BO's from TSC....Well they dropped the ball, and I ended up with what I thought were 4 BO's and 2 Red Rangers.....Now it seems one of the RR is not a RR, but I dont know what she is.....In the pics you will see the darker RR next to the supposed RR, but she is getting more white to her and not as much dark like the RR...She is not a BO I am fairly certain, since all of my BO's look exactly alike...Help!!! lol...Thanks in advance..

RR on left, and mystery girl on right...

Mystery girl eating, RR pecking around shavings...

Mystery girl saying hi!!! She is soooo much more friendly and curious than any of my BO's, RR's and BR......

 

[Wishapup]

I think you may have possibly picked up a pair of Red Sexlinks? The dark red one is a pullet, and the "mystery" one might be a cockerel. Cockerels are often more curious/friendly as chicks.

 

[Wyandottes7]

Looks like a possible Red Sex-Link to me.

 

[BantamLover21]

Looks like a possible Red Sex-Link to me.

x2, but I'm not 100% sure.