Can you age my chicks??

[Hedgeland Farms]

Hello,
I bought 6 chicks from the clearance bin at Rural King bc they were "too big." I am guess they are abt 12-14wks currently but it would be nice to hear more educated guesses...

I'll post pics of them day one of having them and then now

First pic is day one, second and third pic is maybe a wk into having them, the rest are a few of them now

 

[WIchickMama]

12ish weeks would be my guess