I have several 5 month old chickens that I was sure were roos, based on their long tail feathers and colorful feathers. Now, one of them is doing the submissive squat every time I reach for her and I haven't heard one cock-a-doodle-doo out of the group. No aggressive behavior, no crowing... So, are there breeds that have longer tail feathers in the females? All of these are barnyard mixes, two of them didn't even come from my eggs so I have no idea of their parentage. Any thoughts?