We recently bought some more new baby chicks from TSC. We were told they were sexed and were Pullets. The two Barred Rocks we have look different. One is darker and one is lighter. The Darker one (Oreo) has longer tail feathers, and the lighter one (Roxy) has shorter tail feathers. Im wondering if the lighter one is a Roo?? I read that the lighter Barred Rocks are 'usually' Roo's and the darker Barred Rocks are 'usually' Pullets. I know this isn't always true but I was wondering if you can tell by the pic's. They are just about 4 weeks old now. Thanks!