Ok so my actual question is more along the lines of: How reliable is the whole comb and wattle method of predicting what's a Roo and what is not? I ask because I have a 7 week old Cuckoo Maran that I have been expecting to be a Roo for several weeks now, simply because he/she has a larger comb and the beginnings of wattles, while the others really don't or only have small ones. He/she is the most dominant bird I have as well. But he/she is not crowing at all... At what age of not hearing crowing am I "in the clear"? I will get a picture of him/her later.