Head shape and gender?

[Chickenwingwing]

This may be a stupid question. So I have chicks with a more squarish head shape, and they have bigger combs and are more friendly. I have read that the friendlier chicks are usually males. Has anyone seen a correlation between head shape and gender?
Squarish chick:

Round head shape:

 

[sourland]

I have never noted a correlation.

 

[Chickenwingwing]

I have never noted a correlation.

Ok thanks! I was just curious haha

 

[The Moonshiner]

It would make sense that the square heads are males.
Bigger brains need more skull room.

 

[JacinLarkwell]

Aren't Neanderthals the ones with square heads?

 

[Painted Calls]

It would make sense that the square heads are males.
Bigger brains need more skull room.