I'm brand new to raising chickens, so I was wondering if any of you veterans could tell if my cuckoo maran, Sasha, is a hen or roo. My flock is 10 weeks old today, give or take a few days. Sasha was the first to start making "non-chick" noises, but I can't tell if its attempted crowing or just that she hit the dreaded puberty stage where her voice changes. Here are the pics:

