How do I tell?!?

[tiapet]

I kinda just assumed that all my chicks were girls. However, I now see that many people end up with boys. What exactly is the best way to tell on 6 week old Wyandottes and black austrolorps?

 

[SA Farm]

If you post pics, people on here are really good at helping out with gender determination

 

[tiapet]

I'm new. Still have to figure that out And get good pics...