Please tell me gender and breed!

[Hanie]

These are photos of my six week old chicks. I'd love it if someone could take a guess at their breed and/or gender. There are four - a white one, a black one, a brown one and a tan one. Thanks!

 

[iwiw60]

Still a little too soon to tell, plus we would need better closeups of each one....full head shot and a side shot.

 

[Veer67]

They all look like pullets except for the brown chick in the first picture for now.