Cockerel or hen with serious attitude?

[yurty]

From TS marked as Prairie Blue Bell, 6 weeks. Is this enough to tell gender? Going on attitude I would say yes.

 

[sourland]

It's early, but nothing 'screams' cockerel to me.

 

[nuthatched]

I don't see any obvious indication of male. Temperament isn't a good indicator of gender.
They're too big for a heat lamp.

 

[yurty]

I don't see any obvious indication of male. Temperament isn't a good indicator of gender.
They're too big for a heat lamp.

Thank you. Wasn't sure on the lamp, it still gets cold at night here. Off it goes.