Ok well not all, because a couple were being difficult to photograph. I've got 8 birds that are about 17 1/2 weeks old. My husband teases me saying they're all roosters. No crowing yet, though. Let me know what you think and if better pictures are needed, I'll do my best to get some. Three of my four New Hampshire Reds and one of my three Barred Rocks The Barred Rock looks potentially rooster-like The Reds sort of worry me too, but not as bad; in online pics I've seen, the roos are obvious-looking. The fourth one has beautiful neck feathers, but it's the smallest of the bunch A close up of the Rock in question--it's the tail feathers that make me wonder, but also the comb and wattles seem slightly more pronounced and redder than the other two Rocks. One of my other Rocks for comparison; the third one looks just like this one. My lone Buff Orpington.