I bought 30 Bovans (also called Gold Sex-link) the end of June as layers. As of today 2 have started laying. My question is could some of them be roos? I noticed today while they were in the garden that a couple of them have bigger combs and wattles (is that the right word?) So I was wondering if they could be roos. I didn't think about it before and don't really know how to tell them apart.