How to Identify a Pullet from a Cockerel

[jamie7100]

#4 looks like a colombian wyandotte cockerel

 

[MissB]

Here are some more pictures

 

[Hootenany]

[/IMG]. Here are some pictures of a barred rock of mine, 6 weeks old and already has a red colored comb and waddle... is also MUCH larger than the other 5 hens I have and all from same litter.... is she /he a rooster? Our first chickens so impossible for me to tell