We got a BLRW pullet at 4 months old... 3 months later 'she' grew saddle feathers and started crowing. The only clue we had was that her legs were so much larger than the orp we got with her (but I thought it was a breed thing). So, I'd compare to the others in the batch and see how it's maturing. (Our roo had smaller wattles at 4 months than this one does at 2, so I would definitely be suspicious.)