We have 4 Buff Orpingtons the same age. This one and one more have a bigger brighter comb and this one is starting to get waddles. Two of them have very small pale combs. I am so hoping this one will be a roo. I keep wishing I could get a picture with 2 of them together to show the difference. They are around 7 weeks. I have heard its harder to tell the Buff Orpingtons sex. We got these at Tractor Supply as pullets. I know that is not always a guarantee though. What do you all think??