Hello, my first little flock of chicks are now 6 weeks old I I think one or two may be roos instead of pullets. I am pretty sure he buff orpington, the white rock and the australorp are pullets, but I am not so sure about the wyandotte and the barred rock. I would appreciate it if some one could help. Also I want to get a few more chicks. Would it be better to get them now so they are closer in age or wait until spring. Thanks for any help.